patch 8.0.1079: memory leak when remote_foreground() fails

Problem:    Memory leak when remote_foreground() fails.
Solution:   Free the error message.

Author: brammool

src/evalfunc.c

@@ -8638,7 +8638,10 @@ remote_common(typval_T *argvars, typval_T *rettv, int expr)
 # endif
     {
 	if (r != NULL)
+	{
 	    EMSG(r);		/* sending worked but evaluation failed */
+	    vim_free(r);
+	}
 	else
 	    EMSG2(_("E241: Unable to send to %s"), server_name);
 	return;
@@ -8698,6 +8701,8 @@ f_remote_foreground(typval_T *argvars UNUSED, typval_T *rettv UNUSED)
     argvars[1].v_type = VAR_STRING;
     argvars[1].vval.v_string = vim_strsave((char_u *)"foreground()");
     argvars[2].v_type = VAR_UNKNOWN;
+    rettv->v_type = VAR_STRING;
+    rettv->vval.v_string = NULL;
     remote_common(argvars, rettv, TRUE);
     vim_free(argvars[1].vval.v_string);
 # endif

src/if_xcmdsrv.c

@@ -420,6 +420,7 @@ serverSendToVim(
 	    {
 		LookupName(dpy, loosename ? loosename : name,
 			   /*DELETE=*/TRUE, NULL);
+		vim_free(loosename);
 		continue;
 	    }
 	}

src/version.c

@@ -769,6 +769,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1079,
 /**/
     1078,
 /**/