Added a patch fixing njs build on alpine3.9+
diff --git a/alpine/Makefile b/alpine/Makefile
index 981f4b8..888e5da 100644
--- a/alpine/Makefile
+++ b/alpine/Makefile
@@ -106,6 +106,7 @@
MODULE_VERSION_PREFIX_njs=$(BASE_VERSION).
MODULE_BUILD_DEPENDS_njs=libedit-dev
+MODULE_PATCHES_njs=extra-patch-njs-fix-build-with-gcc.diff
define MODULE_ADD_CONTROL_TAGS_njs
replaces="nginx-mod-http-js"
diff --git a/alpine/src/extra-patch-njs-fix-build-with-gcc.diff b/alpine/src/extra-patch-njs-fix-build-with-gcc.diff
new file mode 100644
index 0000000..b9ba65a
--- /dev/null
+++ b/alpine/src/extra-patch-njs-fix-build-with-gcc.diff
@@ -0,0 +1,22 @@
+# HG changeset patch
+# User Dmitry Volyntsev <xeioex@nginx.com>
+# Date 1583255688 -10800
+# Tue Mar 03 20:14:48 2020 +0300
+# Node ID 65f4b11e3302358ac965857fb744c72316d45952
+# Parent c5c6aab76bb43ad36fc9f06e48a2ccbb3fc6d02a
+Fixed compilation with gcc.
+
+diff --git a/src/njs_fs.c b/src/njs_fs.c
+--- a/njs-0.3.9/src/njs_fs.c
++++ b/njs-0.3.9/src/njs_fs.c
+@@ -818,6 +818,9 @@ njs_fs_mode(njs_vm_t *vm, njs_value_t *v
+ uint32_t u32;
+ njs_int_t ret;
+
++ /* GCC complains about uninitialized u32. */
++ u32 = 0;
++
+ if (njs_is_undefined(value)) {
+ return default_mode;
+ }
+
