Reference op with variable name

Marlin/utility.h

@@ -32,53 +32,53 @@ void safe_delay(millis_t ms);
 #if ENABLED(ULTRA_LCD)
 
   // Convert unsigned int to string with 12 format
-  char* itostr2(const uint8_t& x);
+  char* itostr2(const uint8_t &x);
 
   // Convert signed int to rj string with 123 or -12 format
-  char* itostr3(const int& x);
+  char* itostr3(const int &x);
 
   // Convert unsigned int to lj string with 123 format
-  char* itostr3left(const int& xx);
+  char* itostr3left(const int &xx);
 
   // Convert signed int to rj string with _123, -123, _-12, or __-1 format
-  char *itostr4sign(const int& x);
+  char *itostr4sign(const int &x);
 
   // Convert unsigned float to string with 1.23 format
-  char* ftostr12ns(const float& x);
+  char* ftostr12ns(const float &x);
 
   // Convert signed float to fixed-length string with 023.45 / -23.45 format
-  char *ftostr32(const float& x);
+  char *ftostr32(const float &x);
 
   // Convert float to fixed-length string with +123.4 / -123.4 format
-  char* ftostr41sign(const float& x);
+  char* ftostr41sign(const float &x);
 
   // Convert signed float to string (6 digit) with -1.234 / _0.000 / +1.234 format
-  char* ftostr43sign(const float& x, char plus=' ');
+  char* ftostr43sign(const float &x, char plus=' ');
 
   // Convert unsigned float to rj string with 12345 format
-  char* ftostr5rj(const float& x);
+  char* ftostr5rj(const float &x);
 
   // Convert signed float to string with +1234.5 format
-  char* ftostr51sign(const float& x);
+  char* ftostr51sign(const float &x);
 
   // Convert signed float to space-padded string with -_23.4_ format
-  char* ftostr52sp(const float& x);
+  char* ftostr52sp(const float &x);
 
   // Convert signed float to string with +123.45 format
-  char* ftostr52sign(const float& x);
+  char* ftostr52sign(const float &x);
 
   // Convert unsigned float to string with 1234.56 format omitting trailing zeros
-  char* ftostr62rj(const float& x);
+  char* ftostr62rj(const float &x);
 
   // Convert float to rj string with 123 or -12 format
-  FORCE_INLINE char *ftostr3(const float& x) { return itostr3((int)x); }
+  FORCE_INLINE char *ftostr3(const float &x) { return itostr3((int)x); }
 
   #if ENABLED(LCD_DECIMAL_SMALL_XY)
     // Convert float to rj string with 1234, _123, 12.3, _1.2, -123, _-12, or -1.2 format
-    char *ftostr4sign(const float& fx);
+    char *ftostr4sign(const float &fx);
   #else
     // Convert float to rj string with 1234, _123, -123, __12, _-12, ___1, or __-1 format
-    FORCE_INLINE char *ftostr4sign(const float& x) { return itostr4sign((int)x); }
+    FORCE_INLINE char *ftostr4sign(const float &x) { return itostr4sign((int)x); }
   #endif
 
 #endif // ULTRA_LCD