Fix macvim-dev#1020

PR macvim-dev#1002 removed decoding of the mvim:// url query.
Every query goes through decoding now, no exceptions.

Author: frarees

src/MacVim/MMAppController.m

@@ -1758,16 +1758,11 @@ - (void)handleGetURLEvent:(NSAppleEventDescriptor *)event
                 // parse value
                 NSString *v = [arr objectAtIndex:1];
 
-                // do not decode url, since it's a file URI
-                BOOL decode = ![f isEqualToString:@"url"];
-                if (decode)
-                {
 #if MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_11
-                    v = [f stringByRemovingPercentEncoding];
+		v = [f stringByRemovingPercentEncoding];
 #else
-                    v = [f stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
+		v = [f stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
 #endif
-                }
 
 		[dict setValue:v forKey:f];
             }