Backport a fix from CTags SVN to prevent possible crashes by trying to free NULL pointers.

git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@4835 ea778897-0a13-0410-b9d1-a72fbfd435f5

ChangeLog

@@ -9,6 +9,8 @@
    Use tm_source_file_set_tag_arglist() to set the argument list
    field of Python class tags to the argument list of their
    __init__() methods.
+   Backport a fix from CTags SVN to prevent possible crashes by trying
+   to free NULL pointers.
 
 
 2010-04-17  Enrico Tröger  <enrico(dot)troeger(at)uvena(dot)de>

tagmanager/python.c

@@ -355,6 +355,7 @@ static void parseFunction (const char *cp, vString *const def,
 	cp = parseIdentifier (cp, def);
 	arglist = parseArglist (cp);
 	makeFunctionTag (def, parent, is_class_parent, arglist);
+	if (arglist != NULL)
 		eFree (arglist);
 }
 
@@ -747,6 +748,7 @@ static void findPythonTags (void)
 				/* show class members or top-level script lambdas only */
 				if (parent_is_class || vStringLength(parent) == 0)
 					makeFunctionTag (name, parent, parent_is_class, arglist);
+				if (arglist != NULL)
 					eFree (arglist);
 			}
 			else