drop some useless return statements

code/tools/asm/q3asm.c

@@ -250,7 +250,6 @@ static void hashtable_init (hashtable_t *H, int buckets)
 {
   H->buckets = buckets;
   H->table = calloc(H->buckets, sizeof(*(H->table)));
-  return;
 }
 
 static hashtable_t *hashtable_new (int buckets)
@@ -285,7 +284,6 @@ static void hashtable_add (hashtable_t *H, int hashvalue, void *datum)
     }
   hc->data = datum;
   hc->next = 0;
-  return;
 }
 
 static hashchain_t *hashtable_get (hashtable_t *H, int hashvalue)

code/tools/lcc/cpp/cpp.c

@@ -250,7 +250,6 @@ control(Tokenrow *trp)
 		break;
 	}
 	setempty(trp);
-	return;
 }
 
 void *

code/tools/lcc/cpp/include.c

@@ -108,7 +108,6 @@ doinclude(Tokenrow *trp)
 	return;
 syntax:
 	error(ERROR, "Syntax error in #include");
-	return;
 }
 
 /*

code/tools/lcc/cpp/macro.c

@@ -218,7 +218,6 @@ expand(Tokenrow *trp, Nlist *np)
 	insertrow(trp, ntokc, &ntr);
 	trp->tp -= rowlen(&ntr);
 	dofree(ntr.bp);
-	return;
 }	
 
 /*