change degree symbol

glcdfont.c

@@ -183,7 +183,7 @@ static const unsigned char font[] PROGMEM = {
 	0x00, 0x7A, 0x0A, 0x0A, 0x72,
 	0x7D, 0x0D, 0x19, 0x31, 0x7D,
 	0x26, 0x29, 0x29, 0x2F, 0x28,
-	0x06, 0x09, 0x09, 0x09, 0x06,
+	0x06, 0x09, 0x09, 0x06, 0x00, // Degree
 	0x30, 0x48, 0x4D, 0x40, 0x20,
 	0x38, 0x08, 0x08, 0x08, 0x08,
 	0x08, 0x08, 0x08, 0x08, 0x38,