avoid unused warning in non-debug mode

Change-Id: I9687f5388a8c01075ee6e359ff9350edff296f4d

1 files changed, 1 insertions, 1 deletions

diff --git a/sal/inc/rtl/stringconcat.hxx b/sal/inc/rtl/stringconcat.hxx
index 9fb95680faa7..bf0244af6e77 100644
--- a/sal/inc/rtl/stringconcat.hxx
+++ b/sal/inc/rtl/stringconcat.hxx
@@ -128,7 +128,7 @@ struct ToStringHelper< char[ N ] >
 template< int N >
 struct ToStringHelper< const char[ N ] >
     {
-    static int length( const char str[ N ] ) { assert( strlen( str ) == N - 1 ); return N - 1; }
+    static int length( const char str[ N ] ) { (void)str; assert( strlen( str ) == N - 1 ); return N - 1; }
     static char* addData( char* buffer, const char str[ N ] ) { return addDataHelper( buffer, str, N - 1 ); }
     static sal_Unicode* addData( sal_Unicode* buffer, const char str[ N ] ) { return addDataLiteral( buffer, str, N - 1 ); }
     static const bool allowOStringConcat = true;