virsh: do timing even for unusable connections

Time values were uninitialized if the connection wasn't usable.
(cherry picked from commit 8b235d40)

tools/virsh.c

@@ -1549,20 +1549,20 @@ vshCommandRun(vshControl *ctl, const vshCmd *cmd)
             !(cmd->def->flags & VSH_CMD_FLAG_NOCONNECT))
             vshReconnect(ctl);
 
+        if (enable_timing)
+            GETTIMEOFDAY(&before);
+
         if ((cmd->def->flags & VSH_CMD_FLAG_NOCONNECT) ||
             vshConnectionUsability(ctl, ctl->conn)) {
-            if (enable_timing)
-                GETTIMEOFDAY(&before);
-
             ret = cmd->def->handler(ctl, cmd);
-
-            if (enable_timing)
-                GETTIMEOFDAY(&after);
         } else {
             /* connection is not usable, return error */
             ret = false;
         }
 
+        if (enable_timing)
+            GETTIMEOFDAY(&after);
+
         /* try to automatically catch disconnections */
         if (!ret &&
             ((last_error != NULL) &&