mesa: fix dumb sizeof() vs. strlen() mix-up
diff --git a/src/mesa/shader/prog_print.c b/src/mesa/shader/prog_print.c
index 0a78a0a..3e006a4 100644
--- a/src/mesa/shader/prog_print.c
+++ b/src/mesa/shader/prog_print.c
@@ -918,7 +918,7 @@
    else
       type = "vert";
 
-   _mesa_snprintf(filename, strlen(filename), "shader_%u.%s", shader->Name, type);
+   _mesa_snprintf(filename, sizeof(filename), "shader_%u.%s", shader->Name, type);
    f = fopen(filename, "w");
    if (!f) {
       fprintf(stderr, "Unable to open %s for writing\n", filename);