fixed Call to deprecated function

`tempfile.mktemp` may be insecure

Author: alekssamos

addon/globalPlugins/CloudVision/__init__.py

@@ -585,7 +585,8 @@ def script_analyzeClipboard(self, gesture):
 		global fileName
 		try:
 			fileExtension="png"
-			tpng = tempfile.mktemp(suffix="."+fileExtension)
+			tpngfp = tempfile.NamedTemporaryFile(suffix="."+fileExtension)
+			tpng = tpngfp.name
 			filePath = tpng
 			fileName = os.path.basename(filePath)
 			b=get_image_from_clipboard()
@@ -598,6 +599,7 @@ def script_analyzeClipboard(self, gesture):
 		except:
 			log.exception("script error")
 		finally:
+			tpngfp.close()
 			if os.path.isfile(tpng): os.remove(tpng)
 			filePath = ""
 			fileExtension = ""