[gcc r10-6967] Remove duplicate declaration.

[Martin Liska]

https://gcc.gnu.org/g:8dd5d8f31a4f42cdb56341185596783e7b995bb6

commit r10-6967-g8dd5d8f31a4f42cdb56341185596783e7b995bb6
Author: Martin Liska <mliska@suse.cz>
Date:   Mon Mar 2 13:08:49 2020 +0100

    Remove duplicate declaration.
    
    	* libgcov-interface.c: Remove duplicate
    	declaration of __gcov_flush_mx.

Diff:
---
 libgcc/ChangeLog           | 5 +++++
 libgcc/libgcov-interface.c | 1 -
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index dedc308..99e999b 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,8 @@
+2020-03-02  Martin Liska  <mliska@suse.cz>
+
+	* libgcov-interface.c: Remove duplicate
+	declaration of __gcov_flush_mx.
+
 2020-02-18  Martin Liska  <mliska@suse.cz>
 
 	PR ipa/92924
diff --git a/libgcc/libgcov-interface.c b/libgcc/libgcov-interface.c
index 49b44d5..048b902 100644
--- a/libgcc/libgcov-interface.c
+++ b/libgcc/libgcov-interface.c
@@ -52,7 +52,6 @@ void __gcov_dump (void) {}
   { src (); }
 
 extern __gthread_mutex_t __gcov_flush_mx ATTRIBUTE_HIDDEN;
-extern __gthread_mutex_t __gcov_flush_mx ATTRIBUTE_HIDDEN;
 
 #ifdef L_gcov_flush
 #ifdef __GTHREAD_MUTEX_INIT