extmod/modframebuf: Fix signed/unsigned comparison pendantic warning.

pfalcon · pfalcon · commit 0a7735f1a67e · 2017-06-10T20:34:38.000+03:00
Happened with 32-bit gcc 4.8.4.
diff --git a/extmod/modframebuf.c b/extmod/modframebuf.c
@@ -449,7 +449,7 @@ STATIC mp_obj_t framebuf_blit(size_t n_args, const mp_obj_t *args) {
         int cx1 = x1;
         for (int cx0 = x0; cx0 < x0end; ++cx0) {
             color = getpixel(source, cx1, y1);
-            if (color != key) {
+            if (color != (uint32_t)key) {
                 setpixel(self, cx0, y0, color);
             }
             ++cx1;

Original file line number	Diff line number	Diff line change
`@@ -449,7 +449,7 @@ STATIC mp_obj_t framebuf_blit(size_t n_args, const mp_obj_t *args) {`
`449`	`449`	`int cx1 = x1;`
`450`	`450`	`for (int cx0 = x0; cx0 < x0end; ++cx0) {`
`451`	`451`	`color = getpixel(source, cx1, y1);`
`452`		`- if (color != key) {`
	`452`	`+ if (color != (uint32_t)key) {`
`453`	`453`	`setpixel(self, cx0, y0, color);`
`454`	`454`	`}`
`455`	`455`	`++cx1;`