Clang static code analyzer show warning:
  block/stream.c:186:9: warning: Value stored to 'ret' is never read
        ret = 0;
        ^     ~
Reported-by: Euler Robot <euler.ro...@huawei.com>
Signed-off-by: Chen Qun <kuhn.chen...@huawei.com>
Reviewed-by: John Snow <js...@redhat.com>
Reviewed-by: Kevin Wolf <kw...@redhat.com>
---
Cc: John Snow <js...@redhat.com>
Cc: Kevin Wolf <kw...@redhat.com>
Cc: Max Reitz <mre...@redhat.com>

v1->v2:move 'ret' declaration to the for() statement(Base on Kevin's comments).
---
 block/stream.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/block/stream.c b/block/stream.c
index 5562ccbf57..aa2e7af98e 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -114,7 +114,6 @@ static int coroutine_fn stream_run(Job *job, Error **errp)
     int64_t offset = 0;
     uint64_t delay_ns = 0;
     int error = 0;
-    int ret = 0;
     int64_t n = 0; /* bytes */
 
     if (bs == s->bottom) {
@@ -139,6 +138,7 @@ static int coroutine_fn stream_run(Job *job, Error **errp)
 
     for ( ; offset < len; offset += n) {
         bool copy;
+        int ret;
 
         /* Note that even when no rate limit is applied we need to yield
          * with no pending I/O here so that bdrv_drain_all() returns.
@@ -183,7 +183,6 @@ static int coroutine_fn stream_run(Job *job, Error **errp)
                 break;
             }
         }
-        ret = 0;
 
         /* Publish progress */
         job_progress_update(&s->common.job, n);
-- 
2.23.0



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