crt: Add functions to api-ms-win-core-string-obsolete for windowscoreheadless_apiset

Signed-off-by: Mark Harmstone <mark@harmstone.com>
Signed-off-by: Martin Storsjö <martin@martin.st>
diff --git a/mingw-w64-crt/lib-common/api-ms-win-core-string-obsolete-l1-1-0.def b/mingw-w64-crt/lib-common/api-ms-win-core-string-obsolete-l1-1-0.def
index ecc48e0..0a825e4 100644
--- a/mingw-w64-crt/lib-common/api-ms-win-core-string-obsolete-l1-1-0.def
+++ b/mingw-w64-crt/lib-common/api-ms-win-core-string-obsolete-l1-1-0.def
@@ -7,6 +7,7 @@
 lstrcmpiA
 lstrcmpiW
 lstrcmpW
+lstrcpynA
 lstrcpynW
 lstrcpyW
 lstrlenA