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Small changes in symbol.c

Revert change to lookup to improve readibility.

--- a/cc1/symbol.c

+++ b/cc1/symbol.c

@@ -73,9 +73,11 @@

 Symbol *

 lookup(register char *s, uint8_t ns)

 {

+	struct symtab *tbl;

 	register Symbol *sym;

-	for (sym = symtab[ns].htab[hash(s)]; sym; sym = sym->hash) {

+	tbl = &symtab[ns];

+	for (sym = tbl->htab[hash(s)]; sym; sym = sym->hash) {

 		if (!strcmp(sym->name, s))

 			return sym;

 	}

@@ -99,10 +101,7 @@

 	sym->next = tbl->head;

 	tbl->head = sym;

-

 	t = &tbl->htab[hash(s)];

 	sym->hash = *t;

-	*t = sym;

-

-	return sym;

+	return *t = sym;

 }

-- 

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