Fix false positive (#21)

Author: bunyk

durationcheck.go

@@ -150,6 +150,9 @@ func isAcceptableNestedExpr(pass *analysis.Pass, n ast.Expr) bool {
 	case *ast.Ident:
 		return isAcceptableIdent(pass, e)
 	case *ast.CallExpr:
+		if isAcceptableCast(pass, e) {
+			return true
+		}
 		t := pass.TypesInfo.TypeOf(e)
 		return !isDuration(t)
 	case *ast.SelectorExpr:

testdata/src/a/a.go

@@ -74,6 +74,8 @@ func validCases() {
 	_ = time.Second * b.SomeInt
 
 	_ = time.Duration(intArr[0]) * time.Second
+
+	_ = time.Duration(y) * 24 * time.Hour
 }
 
 func invalidCases() {