Eliminate c++ compiler warning

diff --git a/coders/pdf.c b/coders/pdf.c
index 228c7a83895494f391a30052969eedc19de14bb7..51f7a8fccc1900c76cfddcc2ba31089fb3cca87c 100644 (file)
--- a/coders/pdf.c
+++ b/coders/pdf.c
@@ -2787,7 +2787,7 @@ RestoreMSCWarning
     {
       (void) FormatLocaleString(buffer,MaxTextExtent,"/Title (\xfe\xff");
       (void) WriteBlobString(image,buffer);
-      for (i=0; i < length; i++)
+      for (i=0; i < (ssize_t) length; i++)
         WriteBlobMSBShort(image,(unsigned short) utf16[i]);
       (void) FormatLocaleString(buffer,MaxTextExtent,")\n");
       (void) WriteBlobString(image,buffer);