Merged revisions 77945 via svnmerge from

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

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r77945 | murf | 2007-08-02 12:21:40 -0600 (Thu, 02 Aug 2007) | 9 lines

Merged revisions 77942 via svnmerge from 
https://origsvn.digium.com/svn/asterisk/branches/1.2

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r77942 | murf | 2007-08-02 11:56:37 -0600 (Thu, 02 Aug 2007) | 1 line

This patch hopefully solves 10141; The user is running with it, and it doesn't appear to harm asterisk's operation, and may prevent a crash. I'll store it in 1.2, as we have shut down support on 1.2, but since I developed the patch before support finished, and it might affect 1.4 and trunk, I'm going ahead with it.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@77946 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/fskmodem.c

@@ -225,7 +225,9 @@ int fsk_serial(fsk_data *fskd, short *buffer, int *len, int *outbyte)
 	int i,j,n1,r;
 	int samples = 0;
 	int olen;
-
+	int beginlen=*len;
+	int beginlenx;
+	
 	switch (fskd->state) {
 		/* Pick up where we left off */
 	case STATE_SEARCH_STARTBIT2:
@@ -253,12 +255,13 @@ int fsk_serial(fsk_data *fskd, short *buffer, int *len, int *outbyte)
 		beginning of a start bit in the TDD sceanario. It just looks for sufficient
 		level to maybe, perhaps, guess, maybe that its maybe the beginning of
 		a start bit, perhaps. This whole thing stinks! */
+		beginlenx=beginlen; /* just to avoid unused war warnings */
 		if (demodulator(fskd, &fskd->x1, GET_SAMPLE))
 			return -1;
 		samples++;
 		for (;;) {
 search_startbit2:		   
-			if (!*len) {
+			if (*len <= 0) {
 				fskd->state  =  STATE_SEARCH_STARTBIT2;
 				return 0;
 			}
@@ -278,7 +281,7 @@ search_startbit3:
 			fskd->state = STATE_SEARCH_STARTBIT3;
 			return 0;
 		}
-		for (; i; i--) {
+		for (; i>0; i--) {
 			if (demodulator(fskd, &fskd->x1, GET_SAMPLE))
 				return(-1); 
 #if 0