fix pclose before fgets in init_menu_system

Signed-off-by: Vincent-FK <vincent.buso@funkey-project.com>

Author: Vincent-FK

src/drivers/menu.cpp

@@ -431,8 +431,8 @@ void init_menu_system_values(){
         volume_percentage = 50; ///wrong value: setting default to 50
     }
     else{
-        pclose(fp);
         fgets(res, sizeof(res)-1, fp);
+        pclose(fp);
 
         /// Check if Volume is a number (at least the first char)
         if(res[0] < '0' || res[0] > '9'){
@@ -452,8 +452,8 @@ void init_menu_system_values(){
         brightness_percentage = 50; ///wrong value: setting default to 50
     }
     else{
-        pclose(fp);
         fgets(res, sizeof(res)-1, fp);
+        pclose(fp);
 
         /// Check if brightness is a number (at least the first char)
         if(res[0] < '0' || res[0] > '9'){