Static source code analysis issues from cppcheck

[kungfooman]

I started to test around with cppcheck[1] and it detects quite some errors like these:

This depends on a compiler to initialize variables to 0 e.g.

This can lead to bugs depending on the float representation of the architecture in memory e.g.

Should these issues be fixed?

[1] Download: http://cppcheck.sourceforge.net/

[Pan7]

First Error:
An unsigned variable is an unsigned int.
There is uninitialized bytes returned that are problably never used.
How would a fix look like?
Turn unsigned i into an unsigned char[3] and cast it to unsigned?

I vote yes to fix these issues.