Merge pull request #1367 from Shayanzadeh/master

Fixes a bug where image scale & orientation are ignored when decoding / decompressing an image.

SDWebImage/SDWebImageDecoder.m

@@ -54,7 +54,7 @@
         // Draw the image into the context and retrieve the new image, which will now have an alpha layer
         CGContextDrawImage(context, CGRectMake(0, 0, width, height), imageRef);
         CGImageRef imageRefWithAlpha = CGBitmapContextCreateImage(context);
-        UIImage *imageWithAlpha = [UIImage imageWithCGImage:imageRefWithAlpha];
+        UIImage *imageWithAlpha = [UIImage imageWithCGImage:imageRefWithAlpha scale:image.scale orientation:image.imageOrientation];
     
         if (unsupportedColorSpace)
             CGColorSpaceRelease(colorspaceRef);