Patch to make Z look more like X and Y on UltraLCD

Marlin/ultralcd.cpp

@@ -1496,7 +1496,20 @@ char *ftostr12ns(const float &x)
   return conv;
 }
 
-// Convert int to lj string with +123.0 format
+//  convert float to space-padded string with -_23.4_ format
+char *ftostr32np(const float &x) {
+  char *c = ftostr32(x);
+  if (c[0] == '0' || c[0] == '-') {
+    if (c[0] == '0') c[0] = ' ';
+    if (c[1] == '0') c[1] = ' ';
+  }
+  if (c[5] == '0') {
+    c[5] = ' ';
+    if (c[4] == '0') c[4] = c[3] = ' ';
+  }
+  return c;
+}
+
 char *itostr31(const int &xx)
 {
   conv[0]=(xx>=0)?'+':'-';

Marlin/ultralcd.h

@@ -119,6 +119,7 @@ char *ftostr31ns(const float &x); // float to string without sign character
 char *ftostr31(const float &x);
 char *ftostr32(const float &x);
 char *ftostr12ns(const float &x); 
+char *ftostr32np(const float &x); // remove zero-padding from ftostr32
 char *ftostr5(const float &x);
 char *ftostr51(const float &x);
 char *ftostr52(const float &x);

Marlin/ultralcd_implementation_hitachi_HD44780.h

@@ -548,7 +548,7 @@ static void lcd_implementation_status_screen()
 # endif//LCD_WIDTH > 19
     lcd.setCursor(LCD_WIDTH - 8, 1);
     lcd.print('Z');
-    lcd.print(ftostr32(current_position[Z_AXIS] + 0.00001));
+    lcd.print(ftostr32np(current_position[Z_AXIS] + 0.00001));
 #endif//LCD_HEIGHT > 2
 
 #if LCD_HEIGHT > 3