Don't use 0 as a spelling of NULL.

diff --git a/src/interfaces/libpq/fe-exec.c b/src/interfaces/libpq/fe-exec.c
index ce26e45397137934e01f8489563af69c82d1d438..26125a3ce5185a87cd4f41ac351a5ce6629c3ee3 100644 (file)
--- a/src/interfaces/libpq/fe-exec.c
+++ b/src/interfaces/libpq/fe-exec.c
@@ -2331,12 +2331,15 @@ PQunescapeBytea(const unsigned char *strtext, size_t *retbuflen)
        }
        buflen = j;                                     /* buflen is the length of the unquoted
                                                                 * data */
+
+       /* Shrink the buffer to be no larger than necessary */
        tmpbuf = realloc(buffer, buflen);
 
+       /* It would only be a very brain-dead realloc that could fail, but... */
        if (!tmpbuf)
        {
                free(buffer);
-               return 0;
+               return NULL;
        }
 
        *retbuflen = buflen;