Minor fixes

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@1235 65c4cc65-6c06-0410-ace0-fbb531ad65f3

pbx.c

@@ -1115,8 +1115,10 @@ static int pbx_extension_helper(struct ast_channel *c, char *context, char *exte
 			app = pbx_findapp(e->app);
 			pthread_mutex_unlock(&conlock);
 			if (app) {
-				strncpy(c->context, context, sizeof(c->context-1));
-				strncpy(c->exten, exten, sizeof(c->exten)-1);
+				if (c->context != context)
+					strncpy(c->context, context, sizeof(c->context-1));
+				if (c->exten != exten)
+					strncpy(c->exten, exten, sizeof(c->exten)-1);
 				c->priority = priority;
 				pbx_substitute_variables(passdata, sizeof(passdata), c, e);
 				if (option_debug)

res/res_musiconhold.c

@@ -496,7 +496,7 @@ static int moh_register(char *classname, char *mode, char *param, char *miscargs
 	if (!strcasecmp(mode, "mp3") || !strcasecmp(mode, "quietmp3") || !strcasecmp(mode, "httpmp3")) {
 		if (!strcasecmp(mode, "quietmp3"))
 			moh->quiet = 1;
-		strncpy(moh->dir, param, sizeof(moh->dir));
+		strncpy(moh->dir, param, sizeof(moh->dir) - 1);
 		moh->srcfd = -1;
 #ifdef ZAPATA_MOH
 		/* It's an MP3 Moh -- Open /dev/zap/pseudo for timing...  Is