espeak: build with -Os optimization level

See https://github.com/termux/termux-packages/issues/1680.

packages/espeak/build.sh

@@ -5,11 +5,11 @@ TERMUX_PKG_LICENSE="GPL-2.0"
 # See https://github.com/espeak-ng/espeak-ng/issues/180
 # about cross compilation of espeak-ng.
 TERMUX_PKG_VERSION=1.49.2
-TERMUX_PKG_REVISION=2
+TERMUX_PKG_REVISION=3
+TERMUX_PKG_SRCURL=https://github.com/espeak-ng/espeak-ng/releases/download/${TERMUX_PKG_VERSION}/espeak-ng-${TERMUX_PKG_VERSION}.tar.gz
 TERMUX_PKG_SHA256=cf7ed86850b99bafe819548c73a6651a74300980dd15f319ff22e2bd72ea20b4
 TERMUX_PKG_BREAKS="espeak-dev"
 TERMUX_PKG_REPLACES="espeak-dev"
-TERMUX_PKG_SRCURL=https://github.com/espeak-ng/espeak-ng/releases/download/${TERMUX_PKG_VERSION}/espeak-ng-${TERMUX_PKG_VERSION}.tar.gz
 TERMUX_PKG_BUILD_IN_SRC=true
 TERMUX_PKG_HOSTBUILD=true
 TERMUX_PKG_RM_AFTER_INSTALL="lib/*ng-test*"
@@ -40,6 +40,11 @@ termux_step_host_build() {
 	make install
 }
 
+termux_step_pre_configure() {
+	# Oz flag causes problems. See https://github.com/termux/termux-packages/issues/1680:
+	CFLAGS=${CFLAGS/Oz/Os}
+}
+
 termux_step_make() {
 	# Prevent caching of host build:
 	rm -Rf $TERMUX_PKG_HOSTBUILD_DIR