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libdraw: remove flushimage calls from fontresize() and loadchar()

--- a/sys/src/libdraw/font.c

+++ b/sys/src/libdraw/font.c

@@ -296,7 +296,6 @@

 	c->left = fi->left;

 	if(f->display == nil)

 		return 1;

-	flushimage(f->display, 0);	/* flush any pending errors */

 	b = bufimage(f->display, 37);

 	if(b == nil)

 		return 0;

@@ -340,7 +339,6 @@

 		fprint(2, "font cache resize failed: %r\n");

 		goto Return;

 	}

-	flushimage(d, 0);	/* flush any pending errors */

 	b = bufimage(d, 1+4+4+1);

 	if(b == nil){

 		freeimage(new);

@@ -350,11 +348,6 @@

 	BPLONG(b+1, new->id);

 	BPLONG(b+5, ncache);

 	b[9] = f->ascent;

-	if(flushimage(d, 0) < 0){

-		fprint(2, "resize: init failed: %r\n");

-		freeimage(new);

-		goto Return;

-	}

 	freeimage(f->cacheimage);

 	f->cacheimage = new;

     Nodisplay: