Undo silly change.

crypto/pkcs7/example.c

diff --git a/crypto/pkcs7/example.c b/crypto/pkcs7/example.c
index 1539cd1..244abf9 100644
--- a/crypto/pkcs7/example.c
+++ b/crypto/pkcs7/example.c
@@ -25,7 +25,7 @@
 	return NULL;
 	}
 	
-static signed_string_nid= -1;
+static int signed_string_nid= -1;
 
 void add_signed_string(PKCS7_SIGNER_INFO *si, char *str)
 	{