runmodes: improve listing output

This patch removes some multiple line displayed before the
information about unix socket mode.

src/runmodes.c

@@ -255,8 +255,10 @@ void RunModeListRunmodes(void)
             if (mode_displayed == 0)
                 mode_displayed = 1;
         }
-        printf("|-----------------------------------------------------------------"
-               "-----------------------\n");
+        if (mode_displayed == 1) {
+            printf("|-----------------------------------------------------------------"
+                   "-----------------------\n");
+        } 
     }
 
     return;