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Move delctype to decl

Deleting objects in the same function where they are created
is a good style, because you can always see the full cycle of
lyfe of an object, because if you delete them in other
function is harder seeing it.

--- a/decl.c

+++ b/decl.c

@@ -306,7 +306,6 @@

 		addstmt(&c, np);

 	} while (accept(','));

-	delctype(base);

 	expect(';');

 	return c.tree;

 }

@@ -315,6 +314,7 @@

 decl(void)

 {

 	register struct ctype *base;

+	struct node *np;

 repeat: if (!(base = specifier())) {

 		if (curctx != CTX_OUTER || yytoken != IDEN)

@@ -343,7 +343,9 @@

 		delctype(base);

 		goto repeat;

 	}

-	return listdcl(base);

+	np = listdcl(base);

+	delctype(base);

+	return np;

 }

 void