st/mesa: Silence uninitialized variable warning.

Fixes this GCC warning.
state_tracker/st_program.c: In function 'st_print_shaders':
state_tracker/st_program.c:735: warning: 'sh' may be used uninitialized in this function

diff --git a/src/mesa/state_tracker/st_program.c b/src/mesa/state_tracker/st_program.c
index 6a5d741..7679928 100644 (file)
--- a/src/mesa/state_tracker/st_program.c
+++ b/src/mesa/state_tracker/st_program.c
@@ -744,6 +744,10 @@ st_print_shaders(struct gl_context *ctx)
         case GL_FRAGMENT_SHADER:
            sh = (i != 2) ? NULL : shProg[j]->Shaders[i];
            break;
+        default:
+           assert(0);
+           sh = NULL;
+           break;
         }
 
         if (sh != NULL) {