[glibc/azanella/clang] stdlib: Remove -Wmaybe-uninitialized supression on setenv.c

[Adhemerval Zanella <azanella@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ca1005e07f1fe2929c11ea6685f3cd2c09708a0a

commit ca1005e07f1fe2929c11ea6685f3cd2c09708a0a
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Wed Sep 13 16:55:27 2023 -0300

    stdlib: Remove -Wmaybe-uninitialized supression on setenv.c
    
    It is not required on current supported gcc.

Diff:
---
 stdlib/setenv.c | 13 ++-----------
 1 file changed, 2 insertions(+), 11 deletions(-)

diff --git a/stdlib/setenv.c b/stdlib/setenv.c
index e2164371ad..a21ffed19f 100644
--- a/stdlib/setenv.c
+++ b/stdlib/setenv.c
@@ -19,13 +19,6 @@
 # include <config.h>
 #endif
 
-/* Pacify GCC; see the commentary about VALLEN below.  This is needed
-   at least through GCC 4.9.2.  Pacify GCC for the entire file, as
-   there seems to be no way to pacify GCC selectively, only for the
-   place where it's needed.  Do not use DIAG_IGNORE_NEEDS_COMMENT
-   here, as it's not defined yet.  */
-#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
-
 #include <errno.h>
 #if !_LIBC
 # if !defined errno && !defined HAVE_ERRNO_DECL
@@ -121,10 +114,8 @@ __add_to_environ (const char *name, const char *value, const char *combined,
 
   /* Compute lengths before locking, so that the critical section is
      less of a performance bottleneck.  VALLEN is needed only if
-     COMBINED is null (unfortunately GCC is not smart enough to deduce
-     this; see the #pragma at the start of this file).  Testing
-     COMBINED instead of VALUE causes setenv (..., NULL, ...)  to dump
-     core now instead of corrupting memory later.  */
+     COMBINED is null.  Testing COMBINED instead of VALUE causes setenv
+     (..., NULL, ...) to dump core now instead of corrupting memory later.  */
   const size_t namelen = strlen (name);
   size_t vallen;
   if (combined == NULL)