Fix some harmless but annoying warnings about casts in libtiff code.

Avoid MSVC C4244 warnings due to implicit casts between 64 and 32 bit
integers.

This patch was also submitted to libtiff via

	http://bugzilla.maptools.org/show_bug.cgi?id=2427

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73388 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/tiff/libtiff/tif_read.c b/src/tiff/libtiff/tif_read.c
index 4e0e84d9f74266ff7a1cdccdcaba863616ad03cf..0d1e2c9f555a8fa74663af4cfdb0ed37633752a8 100644 (file)
--- a/src/tiff/libtiff/tif_read.c
+++ b/src/tiff/libtiff/tif_read.c
@@ -47,7 +47,7 @@ TIFFFillStripPartial( TIFF *tif, int strip, tmsize_t read_ahead, int restart )
 {
        static const char module[] = "TIFFFillStripPartial";
        register TIFFDirectory *td = &tif->tif_dir;
-        uint64 unused_data;
+        tmsize_t unused_data;
         uint64 read_offset;
         tmsize_t cc, to_read;
         /* tmsize_t bytecountm; */
@@ -117,7 +117,7 @@ TIFFFillStripPartial( TIFF *tif, int strip, tmsize_t read_ahead, int restart )
         if( (uint64) to_read > td->td_stripbytecount[strip] 
             - tif->tif_rawdataoff - tif->tif_rawdataloaded )
         {
-                to_read = td->td_stripbytecount[strip]
+                to_read = (tmsize_t)td->td_stripbytecount[strip]
                         - tif->tif_rawdataoff - tif->tif_rawdataloaded;
         }