bpo-36544 : Fix regression introduced in bpo-36146 (GH-12708)

https://bugs.python.org/issue36544

Author: xdegaye

Misc/NEWS.d/next/Build/2019-04-06-18-53-03.bpo-36544.hJr2_a.rst

@@ -0,0 +1 @@
+Fix regression introduced in bpo-36146 refactoring setup.py

setup.py

@@ -1642,6 +1642,7 @@ def detect_modules(self):
  self.detect_crypt()
  self.detect_socket()
  self.detect_openssl_hashlib()
+ self.detect_hash_builtins()
  self.detect_dbm_gdbm()
  self.detect_sqlite()
  self.detect_platform_specific_exts()
@@ -2184,6 +2185,7 @@ def split_var(name, sep):
  library_dirs=openssl_libdirs,
  libraries=openssl_libs))
 
+ def detect_hash_builtins(self):
  # We always compile these even when OpenSSL is available (issue #14693).
  # It's harmless and the object code is tiny (40-50 KiB per module,
  # only loaded when actually used).