Eliminate spurious error message from the PNG encoder.

diff --git a/coders/png.c b/coders/png.c
index 0d67cabb59d3cfb4ea1cbf59c926328e352fe1be..1882714ad8e0b235a5e42da176c755f2ab5b98a2 100644 (file)
--- a/coders/png.c
+++ b/coders/png.c
@@ -11173,7 +11173,7 @@ static MagickBooleanType WritePNGImage(const ImageInfo *image_info,
       if (LocaleCompare(value,"0") == 0)
         mng_info->write_png_compression_level = 1;
 
-      if (LocaleCompare(value,"1") == 0)
+      else if (LocaleCompare(value,"1") == 0)
         mng_info->write_png_compression_level = 2;
 
       else if (LocaleCompare(value,"2") == 0)