cgen: fix a c2v bug with variadics

vlib/v/ast/table.v

@@ -39,6 +39,7 @@ pub mut:
 	// When table.gostmts > 0, __VTHREADS__ is defined, which can be checked with `$if threads {`
 }
 
+/*
 [unsafe]
 pub fn (t &Table) free() {
 	unsafe {
@@ -58,6 +59,7 @@ pub fn (t &Table) free() {
 		t.used_vweb_types.free()
 	}
 }
+*/
 
 pub type FnPanicHandler = fn (&Table, string)
 

vlib/v/gen/c/fn.v

@@ -1227,7 +1227,12 @@ fn (mut g Gen) call_args(node ast.CallExpr) {
 			}
 		}
 		elem_type := g.typ(arr_info.elem_type)
-		if args.len > 0 && args[args.len - 1].expr is ast.ArrayDecompose {
+		if g.pref.translated && args.len == 1 {
+			// Handle `foo(c'str')` for `fn foo(args ...&u8)`
+			// TODO handle this in a better place
+			// println(g.table.type_to_str(args[0].typ))
+			g.expr(args[0].expr)
+		} else if args.len > 0 && args[args.len - 1].expr is ast.ArrayDecompose {
 			g.expr(args[args.len - 1].expr)
 		} else {
 			if variadic_count > 0 {