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[cc1] Remove linksym()

This function was used only in newsym() and this new form
makes the code more readable and compact.

--- a/cc1/symbol.c

+++ b/cc1/symbol.c

@@ -136,23 +136,6 @@

 	return id;

 }

-static Symbol *

-linksym(Symbol *sym)

-{

-	Symbol *p, *prev;

-

-	switch (sym->ns) {

-	case NS_CPP:

-		return sym;

-	case NS_LABEL:

-		sym->next = labels;

-		return labels = sym;

-	default:

-		sym->next = head;

-		return head = sym;

-	}

-}

-

 Symbol *

 newsym(int ns, char *name)

 {

@@ -169,8 +152,16 @@

 	sym->flags = 0;

 	sym->u.s = NULL;

 	sym->type = NULL;

-	sym->next = sym->hash = NULL;

-	return linksym(sym);

+	sym->hash = NULL;

+

+	if (ns == NS_LABEL) {

+		sym->next = labels;

+		labels = sym;

+	} else if (ns != NS_CPP) {

+		sym->next = head;

+		head = sym;

+	}

+	return sym;

 }

 static Symbol *