More malloc() return checks

src/uifc/uifc32.c

@@ -461,6 +461,7 @@ void docopy(void)
 					case CIOLIB_BUTTON_1_DRAG_END:
 						lines=abs(mevent.endy-mevent.starty)+1;
 						copybuf=malloc(((endy-starty+1)*(endx-startx+1)+1+lines*2)*4);
+						if (copybuf) {
 							outpos=0;
 							for(y=starty-1;y<endy;y++) {
 								for(x=startx-1;x<endx;x++) {
@@ -483,6 +484,7 @@ void docopy(void)
 							copybuf[outpos]=0;
 							copytext(copybuf, strlen(copybuf));
 							free(copybuf);
+						}
 						restorescreen(screen);
 						freescreen(screen);
 						freescreen(sbuffer);