Enhancement: Remove redundant return statements in UDP interconnect code

In C, reaching the closing brace of a void function implicitly returns
control to the caller. Explicit 'return;' statements in these positions
are unnecessary noise that clutters the code. Removing them aligns the
code with common C style guidelines and improves readability.

---------

Co-authored-by: Leonid <63977577+leborchuk@users.noreply.github.com>
diff --git a/contrib/interconnect/udp/ic_udpifc.c b/contrib/interconnect/udp/ic_udpifc.c
index 47c6273..0f26d73 100644
--- a/contrib/interconnect/udp/ic_udpifc.c
+++ b/contrib/interconnect/udp/ic_udpifc.c
@@ -1381,8 +1381,6 @@
 	t->count++;
 
 	elog(DEBUG2, "add icid %d cid %d status %d", p->icId, p->cid, p->status);
-
-	return;
 }
 
 /*
@@ -1770,7 +1768,6 @@
 			(errcode(ERRCODE_GP_INTERCONNECTION_ERROR),
 			 errmsg("interconnect error: Could not set up udp listener socket"),
 			 errdetail("%s: %m", fun)));
-	return;
 }
 
 /*
@@ -1806,8 +1803,6 @@
 #else
 	(void) old_sigs;
 #endif
-
-	return;
 }
 
 static void
@@ -1822,8 +1817,6 @@
 #else
 	(void) sigs;
 #endif
-
-	return;
 }
 
 void
@@ -1945,7 +1938,6 @@
 	}
 
 	ic_control_info.threadCreated = true;
-	return;
 }
 
 void
@@ -4878,8 +4870,6 @@
 	pthread_mutex_lock(&ic_control_info.lock);
 	conn->stillActive = false;
 	pthread_mutex_unlock(&ic_control_info.lock);
-
-	return;
 }
 
 void
@@ -8208,7 +8198,6 @@
 		pg_freeaddrinfo_all(hint.ai_family, addrs);
 	if (sockfd != -1)
 		closesocket(sockfd);
-	return;
 }
 
 void logChunkParseDetails(MotionConn *conn, uint32 ic_instance_id)