4 bpp Sprite bug fix

OR has precedence over AND so brackets needed.
Remove unused varaible.

Extensions/Sprite.cpp

@@ -831,7 +831,6 @@ uint8_t TFT_eSprite::readPixelValue(int32_t x, int32_t y)
 
   if (_bpp == 4)
   {
-    uint16_t color;
     if ((x & 0x01) == 0)
       return ((_img4[((x+y*_iwidth)>>1)] & 0xF0) >> 4) & 0x0F; // even index = bits 7 .. 4
     else
@@ -1639,14 +1638,14 @@ void TFT_eSprite::drawFastVLine(int32_t x, int32_t y, int32_t h, uint32_t color)
     {
       uint8_t c = (uint8_t) (color & 0xF) << 4;
       while (h--) {
-        _img4[(x + _iwidth * y)>>1] = (uint8_t) (c | _img4[(x + _iwidth * y)>>1] & 0x0F);
+        _img4[(x + _iwidth * y)>>1] = (uint8_t) (c | (_img4[(x + _iwidth * y)>>1] & 0x0F));
         y++;
       }
     }
     else {
       uint8_t c = (uint8_t)color & 0xF;
       while (h--) {
-        _img4[(x - 1 + _iwidth * y)>>1] = (uint8_t) (c | _img4[(x - 1 + _iwidth * y)>>1] & 0xF0); // x is odd; new color goes into the low bits.
+        _img4[(x - 1 + _iwidth * y)>>1] = (uint8_t) (c | (_img4[(x - 1 + _iwidth * y)>>1] & 0xF0)); // x is odd; new color goes into the low bits.
         y++;
       }
     }

TFT_eSPI.h

@@ -16,7 +16,7 @@
 #ifndef _TFT_eSPIH_
 #define _TFT_eSPIH_
 
-#define TFT_ESPI_VERSION "2.0.1"
+#define TFT_ESPI_VERSION "2.0.2"
 
 /***************************************************************************************
 **                         Section 1: Load required header files

library.json

 {
   "name": "TFT_eSPI",
-  "version": "2.0.1",
+  "version": "2.0.2",
   "keywords": "Arduino, tft, ePaper, display, STM32, ESP8266, NodeMCU, ESP32, M5Stack, ILI9341, ST7735, ILI9163, S6D02A1, ILI9486, ST7789, RM68140",
   "description": "A TFT and ePaper SPI graphics library with optimisation for ESP8266, ESP32 and STM32",
   "repository":

library.properties

 name=TFT_eSPI
-version=2.0.1
+version=2.0.2
 author=Bodmer
 maintainer=Bodmer
 sentence=TFT graphics library for Arduino processors with performance optimisation for STM32, ESP8266 and ESP32