Fix a couple of issues with building with strict C99.

C99 doesn't, technically, allow empty statements. Thus if a #define'ed
function ends in a semicolon, and the use of it also ends in a
semicolon, then the compiler sees “;;” at the end.

Since a choice has to be made, I prefer that the semicolon exist at the
“callsite” of a #define'ed fuction. But I haven't gone and changed
everything to follow that in this patch.

Change-Id: I1343e52a5ac6255db49aa053048d0df3225bcf43
Reviewed-on: https://boringssl-review.googlesource.com/3890
Reviewed-by: David Benjamin <davidben@chromium.org>
Reviewed-by: Adam Langley <agl@google.com>

include/openssl/asn1.h

@@ -517,7 +517,7 @@ struct X509_algor_st
        } /* X509_ALGOR */;
 DEFINE_STACK_OF(X509_ALGOR);
 
-DECLARE_ASN1_FUNCTIONS(X509_ALGOR);
+DECLARE_ASN1_FUNCTIONS(X509_ALGOR)
 
 typedef struct NETSCAPE_X509_st
 	{

include/openssl/stack.h

@@ -114,7 +114,7 @@ typedef struct stack_st {
 #define DEFINE_STACK_OF(type) \
 STACK_OF(type) {\
   _STACK stack; \
-};
+}
 
 #define DECLARE_STACK_OF(type) STACK_OF(type);