Don't clear LOCALSTATIONID before sending or receiving. The user may set that

variable.

ASTERISK-18921


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@348212 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_fax.c

@@ -1552,7 +1552,6 @@ static int receivefax_exec(struct ast_channel *chan, const char *data)
 	/* initialize output channel variables */
 	pbx_builtin_setvar_helper(chan, "FAXSTATUS", "FAILED");
 	pbx_builtin_setvar_helper(chan, "REMOTESTATIONID", NULL);
-	pbx_builtin_setvar_helper(chan, "LOCALSTATIONID", NULL);
 	pbx_builtin_setvar_helper(chan, "FAXPAGES", "0");
 	pbx_builtin_setvar_helper(chan, "FAXBITRATE", NULL);
 	pbx_builtin_setvar_helper(chan, "FAXRESOLUTION", NULL);
@@ -2024,7 +2023,6 @@ static int sendfax_exec(struct ast_channel *chan, const char *data)
 	/* initialize output channel variables */
 	pbx_builtin_setvar_helper(chan, "FAXSTATUS", "FAILED");
 	pbx_builtin_setvar_helper(chan, "REMOTESTATIONID", NULL);
-	pbx_builtin_setvar_helper(chan, "LOCALSTATIONID", NULL);
 	pbx_builtin_setvar_helper(chan, "FAXPAGES", "0");
 	pbx_builtin_setvar_helper(chan, "FAXBITRATE", NULL);
 	pbx_builtin_setvar_helper(chan, "FAXRESOLUTION", NULL);