Replace deprecated stringByReplacingPercentEscapesUsingEncoding on 10.11 and higher.

Author: jpetrie

src/MacVim/MMAppController.m

@@ -1721,12 +1721,17 @@ - (void)handleGetURLEvent:(NSAppleEventDescriptor *)event
         while ((param = [enumerator nextObject])) {
             NSArray *arr = [param componentsSeparatedByString:@"="];
             if ([arr count] == 2) {
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_11
+              [dict setValue:[[arr lastObject] stringByRemovingPercentEncoding]
+                      forKey:[[arr objectAtIndex:0] stringByRemovingPercentEncoding]];
+#else
                 [dict setValue:[[arr lastObject]
                             stringByReplacingPercentEscapesUsingEncoding:
                                 NSUTF8StringEncoding]
                         forKey:[[arr objectAtIndex:0]
                             stringByReplacingPercentEscapesUsingEncoding:
                                 NSUTF8StringEncoding]];
+#endif
             }
         }