graphicsmagick: Configure with --without-webp

This fixes a build error if libwebp has been built previously.

packages/graphicsmagick/build.sh

@@ -6,7 +6,10 @@ TERMUX_PKG_SHA256=d965e5c6559f55eec76c20231c095d4ae682ea0cbdd8453249ae8771405659
 # Bandwith limited on main ftp site, so it's asked to use sourceforge instead:
 TERMUX_PKG_SRCURL=http://downloads.sourceforge.net/project/graphicsmagick/graphicsmagick/${TERMUX_PKG_VERSION}/GraphicsMagick-${TERMUX_PKG_VERSION}.tar.xz
 TERMUX_PKG_DEPENDS="littlecms, libtiff, freetype, libjasper, libjpeg-turbo, libpng, libbz2, libxml2, liblzma"
-TERMUX_PKG_EXTRA_CONFIGURE_ARGS="ac_cv_func_ftime=no
+TERMUX_PKG_EXTRA_CONFIGURE_ARGS="
+ac_cv_func_ftime=no
 --with-fontpath=/system/fonts
---without-x"
+--without-webp
+--without-x
+"
 TERMUX_PKG_RM_AFTER_INSTALL="bin/*-config share/man/man1/*-config.1"