Update NEWS

Author: cmb69

NEWS

@@ -16,6 +16,7 @@ PHP                                                                        NEWS
 - GD:
   . Fixed bug #43475 (Thick styled lines have scrambled patterns). (cmb)
   . Fixed bug #53640 (XBM images require width to be multiple of 8). (cmb)
+  . Fixed bug #64641 (imagefilledpolygon doesn't draw horizontal line). (cmb)
 
 - Mbstring:
   . Fixed bug #72405 (mb_ereg_replace - mbc_to_code (oniguruma) -