xfree86: plug memory leak in InitPathList.

All the failure paths were very diligent in freeing the "fullpath" temporary
string, but the success case was not. All the content only got strdup()d, so
it's not live memory anymore.

Signed-off-by: Peter Hutterer <peter@cs.unisa.edu.au>

hw/xfree86/loader/loadmod.c

@@ -177,6 +177,7 @@ InitPathList(const char *path)
     }
     if (list)
 	list[n] = NULL;
+    xfree(fullpath);
     return list;
 }