Mass ANSIfication of function definitions. Doesn't cover all 'extern'
declarations yet, those come later.
diff --git a/Python/sigcheck.c b/Python/sigcheck.c
index 2249ed9..dba4bfb 100644
--- a/Python/sigcheck.c
+++ b/Python/sigcheck.c
@@ -19,7 +19,7 @@
 
 /* ARGSUSED */
 int
-PyErr_CheckSignals()
+PyErr_CheckSignals(void)
 {
 	if (!PyOS_InterruptOccurred())
 		return 0;