Minor refactoring.

src/matrix/render_functions.cpp

@@ -180,6 +180,7 @@ String time_to_string(uint8_t hours, uint8_t minutes)
     switch (hours)
     {
         case 0:
+        {
             if (minutes >= 0 && minutes < 5)
             {
                 message += "MITTERNACHT ";
@@ -189,49 +190,69 @@ String time_to_string(uint8_t hours, uint8_t minutes)
                 message += "ZWOLF ";
             }
             break;
-    case 1:
-        message += "EIN";
-        // EIN(S)
-        if (minutes > 4)
-        {
-            message += "S";
         }
-        message += " ";
+        case 1:
+        {
+            message += "EIN";
+            message += (minutes > 4) ? "S " : " ";  // add "S" if needed
             break;
+        }
         case 2:
+        {
             message += "ZWEI ";
             break;
+        }
         case 3:
+        {
             message += "DREI ";
             break;
+        }
         case 4:
+        {
             message += "VIER ";
             break;
+        }
         case 5:
+        {
             message += "FUNF ";
             break;
+        }
         case 6:
+        {
             message += "SECHS ";
             break;
+        }
         case 7:
+        {
             message += "SIEBEN ";
             break;
+        }
         case 8:
+        {
             message += "ACHT ";
             break;
+        }
         case 9:
+        {
             message += "NEUN ";
             break;
+        }
         case 10:
+        {
             message += "ZEHN ";
             break;
+        }
         case 11:
+        {
             message += "ELF ";
             break;
+        }
         case 12:
+        {
             message += "ZWOLF ";
             break;
         }
+    }
     if ((minutes < 5) && (hours != 0))
     {
         message += "UHR ";