File xzgv-jpegdetect.diff of Package xzgv

diff -Nur ../xzgv-0.8.orig/src/main.c ./src/main.c
--- ../xzgv-0.8.orig/src/main.c	2006-02-14 17:34:31.000000000 +0100
+++ ./src/main.c	2006-02-14 18:05:07.000000000 +0100
@@ -384,7 +384,7 @@
 FILE *in;
 int iret;
 int make_image=0;
-int origw,origh;
+int origw=0,origh=0;
 
 jpeg_exif_orient=0;
 
@@ -436,7 +436,7 @@
   make_image=1;
   }
 
-if(buf[0]==0xff && buf[1]==0xd8)	/* JPEG */
+if((unsigned char)buf[0]==0xff && (unsigned char)buf[1]==0xd8)	/* JPEG */
   {
   if(!read_jpeg_file(file,&bmap,&w,&h,&origw,&origh,for_thumbnail))
     return(NULL);