gallium/hud: add missing break in hud_cpufreq_graph_install()

Fixes: e99b9395be "gallium/hud: Add support for CPU frequency monitoring"
Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>

src/gallium/auxiliary/hud/hud_cpufreq.c

@@ -149,6 +149,7 @@ hud_cpufreq_graph_install(struct hud_pane *pane, int cpu_index,
       break;
    case CPUFREQ_MAXIMUM:
       snprintf(gr->name, sizeof(gr->name), "%s-Max", cfi->name);
+      break;
    default:
       return;
    }