Suppress uninitialized-variable warning in guc.c.

Back-patch 26812bcaa into 9.5, to suppress one more warning
in out-of-support branches.  (Doesn't appear to be needed
before 9.5.)

Discussion: https://postgr.es/m/d0316012-ece7-7b7e-2d36-9c38cb77cb3b@enterprisedb.com

diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 76e0e171c893ae0cbf4fcfa23ae56483c600aee2..6662f4be70703933027ea27c2c9684d368fe2961 100644 (file)
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -9124,6 +9124,8 @@ RestoreGUCState(void *gucstate)
                if (varsourcefile[0])
                        read_gucstate_binary(&srcptr, srcend,
                                                                 &varsourceline, sizeof(varsourceline));
+               else
+                       varsourceline = 0;
                read_gucstate_binary(&srcptr, srcend,
                                                         &varsource, sizeof(varsource));
                read_gucstate_binary(&srcptr, srcend,