libgcrypt: Fix crash in gpg-agent on arm devices

packages/libgcrypt/build.sh

@@ -1,5 +1,5 @@
 TERMUX_PKG_VERSION=1.6.4
-TERMUX_PKG_BUILD_REVISION=1
+TERMUX_PKG_BUILD_REVISION=2
 TERMUX_PKG_HOMEPAGE=http://www.gnu.org/software/libgcrypt/
 TERMUX_PKG_DESCRIPTION="General purpose cryptographic library based on the code from GnuPG"
 TERMUX_PKG_SRCURL=ftp://ftp.gnupg.org/gcrypt/libgcrypt/libgcrypt-${TERMUX_PKG_VERSION}.tar.bz2
@@ -7,6 +7,10 @@ TERMUX_PKG_DEPENDS="libgpg-error"
 LDFLAGS="$LDFLAGS -llog" # libgcrypt uses syslog, which we redirect to android logging
 
 termux_step_pre_configure () {
+	if [ $TERMUX_ARCH = "arm" ]; then
+		# See http://marc.info/?l=gnupg-devel&m=139136972631909&w=3
+		CFLAGS+=" -mno-unaligned-access"
+	fi
 	if [ $TERMUX_ARCH = "i686" ]; then
 		# Fix i686 android build, also in https://bugzilla.gnome.org/show_bug.cgi?id=724050
 		TERMUX_PKG_EXTRA_CONFIGURE_ARGS+=" --disable-asm"