[PATCH] realloc: fix undef typo

[Paul Eggert]

* lib/realloc.c: #undef realloc if config.h defines it.
This fixes a typo that I introduced in
2011-04-08T18:39:01Z!eggert@cs.ucla.edu.
Apparently nobody uses Gnulib realloc in that way?
---
 ChangeLog     | 8 ++++++++
 lib/realloc.c | 1 +
 2 files changed, 9 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 5d91c7acc..9aae007f9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2021-04-10  Paul Eggert  <eggert@cs.ucla.edu>
+
+       realloc: fix undef typo
+       * lib/realloc.c: #undef realloc if config.h defines it.
+       This fixes a typo that I introduced in
+       2011-04-08T18:39:01Z!eggert@cs.ucla.edu.
+       Apparently nobody uses Gnulib realloc in that way?
+
 2021-04-07  Bruno Haible  <bruno@clisp.org>
 
        execute tests: Avoid test failure in certain environments.
diff --git a/lib/realloc.c b/lib/realloc.c
index 51d8d2108..ab027d7f7 100644
--- a/lib/realloc.c
+++ b/lib/realloc.c
@@ -24,6 +24,7 @@
 /* Only the AC_FUNC_REALLOC macro defines 'realloc' already in config.h.  */
 #ifdef realloc
 # define NEED_REALLOC_GNU 1
+# undef realloc
 /* Whereas the gnulib module 'realloc-gnu' defines HAVE_REALLOC_GNU.  */
 #elif GNULIB_REALLOC_GNU && !HAVE_REALLOC_GNU
 # define NEED_REALLOC_GNU 1
-- 
2.27.0