fix -Wshadow compiler warnings

diff --git a/fb_display.c b/fb_display.c
index dbf7fcada3ea4efce30604f992e7957577d0f49c..ce645a4ed3ee36e0cbc248c64be960f06072ba18 100644 (file)
--- a/fb_display.c
+++ b/fb_display.c
@@ -23,7 +23,6 @@
 #include "gfx.h"
 #include "fb_display.h"
 
-extern unsigned int alpha;
 
 void blit2FB(void *fbbuff,
        uint32_t width, uint32_t height,