reformat code

NSData+ImageContentType.m

@@ -26,11 +26,15 @@
         case 0x52:
             // R as RIFF for WEBP
             if ([data length] < 12)
+            {
                 return nil;
-
+            }
+            
             NSString *testString = [[NSString alloc] initWithData:[data subdataWithRange:NSMakeRange(0, 12)] encoding:NSASCIIStringEncoding];
             if ([testString hasPrefix:@"RIFF"] && [testString hasSuffix:@"WEBP"])
+            {
                 return @"image/webp";
+            }
             
             return nil;
     }