Silence -Wimplicit-fallthrough in sysv_shmem.c.

Commit 2f932f71d9f2963bbd201129d7b971c8f5f077fd added code that elicits
a warning on buildfarm member flaviventris.  Back-patch to 9.4, like
that commit.

Reported by Andres Freund.

Discussion: https://postgr.es/m/20190404020057.galelv7by75ekqrh@alap3.anarazel.de

diff --git a/src/backend/port/sysv_shmem.c b/src/backend/port/sysv_shmem.c
index b5b7c7042d4cd1c78d6839e6bbfd9247cbaa1626..df844ff9e3980e36050be4422f7484dd8a08a34b 100644 (file)
--- a/src/backend/port/sysv_shmem.c
+++ b/src/backend/port/sysv_shmem.c
@@ -672,6 +672,7 @@ PGSharedMemoryCreate(Size size, int port,
                                                                (unsigned long) shmid),
                                                 errhint("Terminate any old server processes associated with data directory \"%s\".",
                                                                 DataDir)));
+                               break;
                        case SHMSTATE_ENOENT:
 
                                /*
@@ -703,6 +704,7 @@ PGSharedMemoryCreate(Size size, int port,
                                        dsm_cleanup_using_control_segment(oldhdr->dsm_control);
                                if (shmctl(shmid, IPC_RMID, NULL) < 0)
                                        NextShmemSegID++;
+                               break;
                }
 
                if (oldhdr && shmdt(oldhdr) < 0)