glsl: Silence unused variable warning.

diff --git a/src/glsl/glsl_symbol_table.cpp b/src/glsl/glsl_symbol_table.cpp
index 11e1671..ed71244 100644 (file)
--- a/src/glsl/glsl_symbol_table.cpp
+++ b/src/glsl/glsl_symbol_table.cpp
@@ -104,6 +104,7 @@ bool glsl_symbol_table::add_variable(const char *name, ir_variable *v)
            entry->f = existing->f;
         int added = _mesa_symbol_table_add_symbol(table, -1, name, entry);
         assert(added == 0);
+        (void)added;
         return true;
       }
       return false;