Handle errors in the config better

luaA_loadrc() now returns a failure when executing the config file causes an
error.
Previously it returned a success which meant the next config file wasn't tried.

Signed-off-by: Uli Schlachter <psychon@znc.in>

luaa.c

@@ -833,9 +833,11 @@ luaA_loadrc(const char *confpath, bool run)
             }
         }
         else
+        {
             lua_pop(globalconf.L, 1);
             return true;
         }
+    }
     else
         fprintf(stderr, "%s\n", lua_tostring(globalconf.L, -1));