Refactor UnityPrintNumber(), remove unreachable code

 Remove what looks like an overflow check. 'divisor' cannot overflow
  since it is the same type as 'number' and cannot be greater.

src/unity.c

@@ -164,12 +164,9 @@ void UnityPrintNumberByStyle(const _U_SINT number, const UNITY_DISPLAY_STYLE_T s
 }
 
 //-----------------------------------------------
-/// basically do an itoa using as little ram as possible
 void UnityPrintNumber(const _U_SINT number_to_print)
 {
-    _U_UINT divisor = 1;
-    _U_UINT next_divisor;
-    _U_UINT number;
+    _U_UINT number = (_U_UINT)number_to_print;
 
     if (number_to_print < 0)
     {
@@ -177,29 +174,7 @@ void UnityPrintNumber(const _U_SINT number_to_print)
         UNITY_OUTPUT_CHAR('-');
         number = (_U_UINT)(-number_to_print);
     }
-    else
-    {
-        //Non-negative number
-        number = (_U_UINT)number_to_print;
-    }
-
-    // figure out initial divisor
-    while (number / divisor > 9)
-    {
-        next_divisor = divisor * 10;
-        if (next_divisor > divisor)
-            divisor = next_divisor;
-        else
-            break;
-    }
-
-    // now mod and print, then divide divisor
-    do
-    {
-        UNITY_OUTPUT_CHAR((char)('0' + (number / divisor % 10)));
-        divisor /= 10;
-    }
-    while (divisor > 0);
+    UnityPrintNumberUnsigned(number);
 }
 
 //-----------------------------------------------
@@ -207,16 +182,11 @@ void UnityPrintNumber(const _U_SINT number_to_print)
 void UnityPrintNumberUnsigned(const _U_UINT number)
 {
     _U_UINT divisor = 1;
-    _U_UINT next_divisor;
 
     // figure out initial divisor
     while (number / divisor > 9)
     {
-        next_divisor = divisor * 10;
-        if (next_divisor > divisor)
-            divisor = next_divisor;
-        else
-            break;
+        divisor *= 10;
     }
 
     // now mod and print, then divide divisor