Useless assignments

diff --git a/src/backend/catalog/partition.c 
b/src/backend/catalog/partition.c
--- a/src/backend/catalog/partition.c
+++ b/src/backend/catalog/partition.c
@@ -189,7 +189,6 @@ RelationBuildPartitionDesc(Relation rel)
         inhoids = find_inheritance_children(RelationGetRelid(rel), NoLock);

/* Collect bound spec nodes in a list */
- i = 0;
partoids = NIL;
foreach(cell, inhoids)
{
@@ -1508,7 +1508,6 @@ get_qual_for_range(PartitionKey key,
PartitionBoundSpec *spec)

lower_or_start_datum = list_head(spec->lowerdatums);
upper_or_start_datum = list_head(spec->upperdatums);
- num_or_arms = key->partnatts;

         /*
          * A range-partitioned table does not currently allow partition 
keys to be
diff --git a/src/backend/storage/smgr/md.c b/src/backend/storage/smgr/md.c
--- a/src/backend/storage/smgr/md.c
+++ b/src/backend/storage/smgr/md.c
@@ -872,7 +872,7 @@ mdwrite(SMgrRelation reln, ForkNumber forknum, 
BlockNumber blocknum,
  BlockNumber
  mdnblocks(SMgrRelation reln, ForkNumber forknum)
  {
-       MdfdVec    *v = mdopen(reln, forknum, EXTENSION_FAIL);
+       MdfdVec    *v; mdopen(reln, forknum, EXTENSION_FAIL);
         BlockNumber nblocks;
         BlockNumber segno = 0;

diff --git a/src/backend/utils/adt/jsonfuncs.c 
b/src/backend/utils/adt/jsonfuncs.c
--- a/src/backend/utils/adt/jsonfuncs.c
+++ b/src/backend/utils/adt/jsonfuncs.c
@@ -4423,7 +4423,7 @@ IteratorConcat(JsonbIterator **it1, JsonbIterator 
**it2,
                                 rk2;

         r1 = rk1 = JsonbIteratorNext(it1, &v1, false);
-       r2 = rk2 = JsonbIteratorNext(it2, &v2, false);
+       rk2 = JsonbIteratorNext(it2, &v2, false);

         /*
          * Both elements are objects.
diff --git a/src/fe_utils/print.c b/src/fe_utils/print.c
--- a/src/fe_utils/print.c
+++ b/src/fe_utils/print.c
@@ -433,7 +433,6 @@ print_unaligned_text(const printTableContent *cont, 
FILE *fout)
                                 if (need_recordsep)
                                 {

print_separator(cont->opt->recordSep, fout);
-                                       need_recordsep = false;
                                 }
                                 fputs(f->data, fout);
                                 need_recordsep = true;
diff --git a/src/backend/replication/logical/worker.c 
b/src/backend/replication/logical/worker.c
--- a/src/backend/replication/logical/worker.c
+++ b/src/backend/replication/logical/worker.c
@@ -1202,7 +1202,6 @@ LogicalRepApplyLoop(XLogRecPtr last_received)
                                         if (now >= timeout)
                                         {
                                                 requestReply = true;
-                                               ping_sent = true;
                                         }
                                 }
                         }

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