wmlxgettext and wmlindent change exit code

For keyboard interrupt change exit code from 0 to 1.

data/tools/wmlindent

@@ -309,7 +309,7 @@ def sigint_handler(signal, frame):
     This overrides Python's default behavior of displaying a traceback when ctrl-c is pressed.
     """
     print ('Aborted by pressing ctrl-c')
-    sys.exit(0)
+    sys.exit(1)
 
 if __name__ == '__main__':
     signal.signal(signal.SIGINT, sigint_handler)

data/tools/wmlxgettext

@@ -273,7 +273,7 @@ def sigint_handler(signal, frame):
     This overrides Python's default behavior of displaying a traceback when ctrl-c is pressed.
     """
     print ('Aborted by pressing ctrl-c')
-    sys.exit(0)
+    sys.exit(1)