Fixed incorrect array creation reported in #149.
diff --git a/coders/json.c b/coders/json.c
index 32eb991..8431319 100644
--- a/coders/json.c
+++ b/coders/json.c
@@ -1610,7 +1610,8 @@
   scene=0;
   do
   {
-    WriteBlobString(image,"[");
+    if (scene == 0)
+      WriteBlobString(image,"[");
     image->magick_columns=image->columns;
     image->magick_rows=image->rows;
     EncodeImageAttributes(image,file,exception);