pdf: Fix missed detection (bb #2455).

ChangeLog

@@ -1,3 +1,7 @@
+Thu Jan 20 11:38:33 EET 2011 (edwin)
+------------------------------------
+ * libclamav/pdf.c: fix missed detection (bb #2455).
+
 Thu Jan 20 11:19:50 EET 2011 (edwin)
 -----------------------------------
  * libclamav/pdf.c: fix another pdf uninit (bb #2404).

libclamav/pdf.c

@@ -114,7 +114,7 @@ static int find_stream_bounds(const char *start, off_t bytesleft, off_t byteslef
     if ((q2 = cli_memstr(start, bytesleft, "stream", 6))) {
 	q2 += 6;
 	bytesleft -= q2 - start;
-	if (bytesleft < 1)
+	if (bytesleft < 0)
 	    return 0;
 	if (bytesleft >= 2 && q2[0] == '\xd' && q2[1] == '\xa')
 	    q2 += 2;
@@ -122,7 +122,7 @@ static int find_stream_bounds(const char *start, off_t bytesleft, off_t byteslef
 	    q2++;
 	*stream = q2 - start;
 	bytesleft2 -= q2 - start;
-	if (bytesleft2 < 0)
+	if (bytesleft2 <= 0)
 	    return 0;
 	q = q2;
 	q2 = cli_memstr(q, bytesleft2, "endstream", 9);