fix fd leak for webp coder

Signed-off-by: zhangji <[email protected]>
diff --git a/ChangeLog b/ChangeLog
index 9a1b66f..4bcfa5f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2017-02-18  7.0.4-10 Dirk Lemstra <[email protected]>
+  * Fixed fd leak for webp coder (reference
+    https://github.com/ImageMagick/ImageMagick/pull/382)
+
 2017-02-15  7.0.4-10 Cristy  <quetzlzacatenango@image...>
   * Prevent random pixel data for corrupt JPEG image (bug report from
     Hirokazu Moriguchi, Sony).
diff --git a/coders/webp.c b/coders/webp.c
index e994886..c6f7fad 100644
--- a/coders/webp.c
+++ b/coders/webp.c
@@ -366,6 +366,7 @@
   }
   WebPFreeDecBuffer(webp_image);
   stream=(unsigned char*) RelinquishMagickMemory(stream);
+  (void) CloseBlob(image);
   return(image);
 }
 #endif