Utils: Handle filePathInfo() like other path tests

filePathInfo() should not result in warning messages if the path is for
a non existing device, just like exists etc.

Fixes: QTCREATORBUG-28439
Change-Id: I47a66bd38a40a86460c4769c1a2156167e467c1b
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/libs/utils/filepath.cpp

@@ -628,11 +628,6 @@ expected_str<qint64> FilePath::writeFileContents(const QByteArray &data, qint64
     return fileAccess()->writeFileContents(*this, data, offset);
 }
 
-FilePathInfo FilePath::filePathInfo() const
-{
-    return fileAccess()->filePathInfo(*this);
-}
-
 FileStreamHandle FilePath::asyncCopy(const FilePath &target, QObject *context,
                                      const CopyContinuation &cont) const
 {
@@ -1188,6 +1183,14 @@ bool FilePath::hasFileAccess() const
     return access.has_value();
 }
 
+FilePathInfo FilePath::filePathInfo() const
+{
+    const expected_str<DeviceFileAccess *> access = getFileAccess(*this);
+    if (!access)
+        return {};
+    return (*access)->filePathInfo(*this);
+}
+
 /*!
    Returns a bool indicating whether a file or directory with this FilePath exists.
 */