bpo-34558: Add missing parentheses in _aix.py (GH-9017)

p.wait()
(cherry picked from commit 172a71f1)
Co-authored-by: Michael Felt <aixtools@users.noreply.github.com>

Lib/ctypes/_aix.py

@@ -115,7 +115,7 @@ def get_ld_headers(file):
         else:
             break
     p.stdout.close()
-    p.wait
+    p.wait()
     return ldr_headers
 
 def get_shared(ld_headers):

Misc/NEWS.d/next/Library/2018-08-31-19-26-55.bpo-34558.MHv582.rst

+Correct typo in Lib/ctypes/_aix.py