Suppress uninitialized-variable warning in new SCRAM code.

While we generally don't sweat too much about "may be used uninitialized"
warnings from older compilers, I noticed that there's a fair number of
buildfarm animals that are producing such a warning *only* for this
variable.  So it seems worth silencing.

diff --git a/src/backend/libpq/auth.c b/src/backend/libpq/auth.c
index 68bb62d873c69b60c81630f4397a6903d550bc96..85175655359829a2cf50dd883066bbb3d45e2286 100644 (file)
--- a/src/backend/libpq/auth.c
+++ b/src/backend/libpq/auth.c
@@ -865,7 +865,7 @@ CheckSCRAMAuth(Port *port, char *shadow_pass, char **logdetail)
    StringInfoData sasl_mechs;
    int         mtype;
    StringInfoData buf;
-   void       *scram_opaq;
+   void       *scram_opaq = NULL;
    char       *output = NULL;
    int         outputlen = 0;
    char       *input;