make: added an alpine patch to fix UB.

base/make/fix-atexit-exit.patch

@@ -0,0 +1,34 @@
+# --- SDE-COPYRIGHT-NOTE-BEGIN ---
+# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
+#
+# Filename: package/.../make/fix-atexit-exit.patch
+# Copyright (C) 2016 The OpenSDE Project
+#
+# More information can be found in the files COPYING and README.
+#
+# This patch file is dual-licensed. It is available under the license the
+# patched project is licensed under, as long as it is an OpenSource license
+# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
+# of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+# --- SDE-COPYRIGHT-NOTE-END ---
+
+Author: Timo Teräs <timo.teras@iki.fi>
+
+POSIX says the behaviour is undefined if atexit callback calls
+exit(). On glibc it works, but on musl it does not. Call instead
+_exit() which is guaranteed to work.
+
+--- ./output.c.orig
++++ ./output.c
+@@ -495,7 +495,7 @@
+         perror_with_name (_("write error: stdout"), "");
+       else
+         O (error, NILF, _("write error: stdout"));
+-      exit (MAKE_TROUBLE);
++      _exit (MAKE_TROUBLE);
+     }
+ }
+ 
+