Avoid segfault when text_left or text_right uses non supported chars.

CHANGELOG

@@ -76,6 +76,7 @@ Bugfixes
    * Fixed configure for SDL.
    * Replace malloc() by calloc(). (Jeroen Massar)
    * Free file descriptor buffers on exit.
+   * Avoid segfault when text_left or text_right uses non supported chars. 
 
 3.2.12 Summary of Changes
 

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.67 for motion Git-05b815771a359a3a66c1c06a597cb6b947fefe89.
+# Generated by GNU Autoconf 2.67 for motion Git-fcdd33103646f13db62d7c1d97040ea6e78ba7a7.
 #
 #
 # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
@@ -549,8 +549,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='motion'
 PACKAGE_TARNAME='motion'
-PACKAGE_VERSION='Git-05b815771a359a3a66c1c06a597cb6b947fefe89'
-PACKAGE_STRING='motion Git-05b815771a359a3a66c1c06a597cb6b947fefe89'
+PACKAGE_VERSION='Git-fcdd33103646f13db62d7c1d97040ea6e78ba7a7'
+PACKAGE_STRING='motion Git-fcdd33103646f13db62d7c1d97040ea6e78ba7a7'
 PACKAGE_BUGREPORT=''
 PACKAGE_URL=''
 
@@ -1217,7 +1217,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures motion Git-05b815771a359a3a66c1c06a597cb6b947fefe89 to adapt to many kinds of systems.
+\`configure' configures motion Git-fcdd33103646f13db62d7c1d97040ea6e78ba7a7 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1278,7 +1278,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of motion Git-05b815771a359a3a66c1c06a597cb6b947fefe89:";;
+     short | recursive ) echo "Configuration of motion Git-fcdd33103646f13db62d7c1d97040ea6e78ba7a7:";;
    esac
   cat <<\_ACEOF
 
@@ -1424,7 +1424,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-motion configure Git-05b815771a359a3a66c1c06a597cb6b947fefe89
+motion configure Git-fcdd33103646f13db62d7c1d97040ea6e78ba7a7
 generated by GNU Autoconf 2.67
 
 Copyright (C) 2010 Free Software Foundation, Inc.
@@ -2021,7 +2021,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by motion $as_me Git-05b815771a359a3a66c1c06a597cb6b947fefe89, which was
+It was created by motion $as_me Git-fcdd33103646f13db62d7c1d97040ea6e78ba7a7, which was
 generated by GNU Autoconf 2.67.  Invocation command line was
 
   $ $0 $@
@@ -6531,7 +6531,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by motion $as_me Git-05b815771a359a3a66c1c06a597cb6b947fefe89, which was
+This file was extended by motion $as_me Git-fcdd33103646f13db62d7c1d97040ea6e78ba7a7, which was
 generated by GNU Autoconf 2.67.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -6593,7 +6593,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-motion config.status Git-05b815771a359a3a66c1c06a597cb6b947fefe89
+motion config.status Git-fcdd33103646f13db62d7c1d97040ea6e78ba7a7
 configured by $0, generated by GNU Autoconf 2.67,
   with options \\"\$ac_cs_config\\"
 

draw.c

@@ -1097,10 +1097,19 @@ static int draw_textn(unsigned char *image, unsigned int startx, unsigned int st
     char_arr_ptr = factor ? big_char_arr_ptr : small_char_arr_ptr;
 
     for (pos = 0; pos < len; pos++) {
-        char_ptr = char_arr_ptr[(int)text[pos]];
+        int pos_check = (int)text[pos];
+
+        char_ptr = char_arr_ptr[pos_check];
 
         for (y = 8 * (factor + 1); y--;) {
             for (x = 7 * (factor + 1); x--;) {
+
+                if (pos_check < 0) {
+                    image_ptr++;
+                    char_ptr++;
+                    continue;
+                }                    
+
                 switch(*char_ptr) {
                 case 1:
                     *image_ptr = 0;