Merged revisions 48944 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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r48944 | russell | 2006-12-24 02:25:38 -0500 (Sun, 24 Dec 2006) | 11 lines

Merged revisions 48943 via svnmerge from 
https://origsvn.digium.com/svn/asterisk/branches/1.2

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r48943 | russell | 2006-12-24 02:23:07 -0500 (Sun, 24 Dec 2006) | 3 lines

Check for the proper return value on an error in a call to mmap().
This was reported by Andy Wang on the asterisk-dev list.  Thanks!

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@48945 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax2.c

@@ -1469,7 +1469,7 @@ static int try_firmware(char *s)
 		return -1;
 	}
 	fwh = mmap(NULL, stbuf.st_size, PROT_READ, MAP_PRIVATE, fd, 0); 
-	if (!fwh) {
+	if (fwh == (void *) -1) {
 		ast_log(LOG_WARNING, "mmap failed: %s\n", strerror(errno));
 		close(fd);
 		return -1;