Fuzzing: disable po4a in static library dependence build as it seems to freeze.

tests/fuzz/oss-fuzz-build.sh

@@ -39,7 +39,7 @@ cd $SRC
 in_oss_fuzz && apt-get update && apt-get install -y \
     make autoconf automake autopoint libtool pkg-config \
     sharutils gettext expect keyutils ninja-build \
-    po4a bison
+    bison
 
 [ ! -d zlib ]   && git clone --depth 1 https://github.com/madler/zlib.git
 [ ! -d xz ]     && git clone https://git.tukaani.org/xz.git
@@ -72,7 +72,7 @@ make install
 cd ..
 
 cd xz
-./autogen.sh
+./autogen.sh --no-po4a
 ./configure --prefix="$DEPS_PATH" --enable-static --disable-shared
 make -j
 make install