glsl: add cast to silence signed/unsigned comparison warning

diff --git a/src/glsl/ast_function.cpp b/src/glsl/ast_function.cpp
index b0f95dd73b65b706c783151173c548d410bd990f..28d49ee0daeb25a946f7a057b439aeaf805ef851 100644 (file)
--- a/src/glsl/ast_function.cpp
+++ b/src/glsl/ast_function.cpp
@@ -223,7 +223,7 @@ match_function_by_name(exec_list *instructions, const char *name,
 
       const char *prefix = "candidates are: ";
 
-      for (int i = -1; i < state->num_builtins_to_link; i++) {
+      for (int i = -1; i < (int) state->num_builtins_to_link; i++) {
         glsl_symbol_table *syms = i >= 0 ? state->builtins_to_link[i]->symbols
                                          : state->symbols;
         f = syms->get_function(name);