twrp: Fix unsigned compare compile warning.
Change-Id: I7e847e76932a6ceea3e669e8b8b9ec35e5ef9d9d
diff --git a/minuitwrp/graphics_fbdev.cpp b/minuitwrp/graphics_fbdev.cpp
index a1c42d0..8cf85f5 100644
--- a/minuitwrp/graphics_fbdev.cpp
+++ b/minuitwrp/graphics_fbdev.cpp
@@ -285,12 +285,10 @@
static GRSurface* fbdev_flip(minui_backend* backend __unused) {
#if defined(RECOVERY_BGRA)
// In case of BGRA, do some byte swapping
- unsigned int idx;
- unsigned char tmp;
unsigned char* ucfb_vaddr = (unsigned char*)gr_draw->data;
- for (idx = 0 ; idx < (gr_draw->height * gr_draw->row_bytes);
+ for (int idx = 0 ; idx < (gr_draw->height * gr_draw->row_bytes);
idx += 4) {
- tmp = ucfb_vaddr[idx];
+ unsigned char tmp = ucfb_vaddr[idx];
ucfb_vaddr[idx ] = ucfb_vaddr[idx + 2];
ucfb_vaddr[idx + 2] = tmp;
}