tool_operate: break out of loop on error

Follow-up to 69bf530dfd2a

The loop could get stuck there in torture tests/OOM.

Closes #15322

diff --git a/src/tool_operate.c b/src/tool_operate.c
index 5aadf26d23f6e91d45e79a209c2494b538116913..1e19fcff6facccac9887ea30ce0aac17f22b1e89 100644 (file)
--- a/src/tool_operate.c
+++ b/src/tool_operate.c
@@ -2994,6 +2994,7 @@ static CURLcode serial_transfers(struct GlobalConfig *global,
         if(result) {
           returncode = result;
           bailout = TRUE;
+          break;
         }
       } while(skipped);
     }