Replace QFileInfo(fileName.toString()) with fileName.toFileInfo()

Change-Id: Iac7f866b4846939af4dcee086ab07797cc6b8ff1
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/libs/utils/fileutils.cpp

@@ -236,7 +236,7 @@ FileName FileUtils::resolveSymlinks(const FileName &path)
 */
 FileName FileUtils::canonicalPath(const FileName &path)
 {
-    const QString result = QFileInfo(path.toString()).canonicalFilePath();
+    const QString result = path.toFileInfo().canonicalFilePath();
     if (result.isEmpty())
         return path;
     return FileName::fromString(result);

src/plugins/projectexplorer/session.cpp

@@ -855,7 +855,7 @@ bool SessionManager::cloneSession(const QString &original, const QString &clone)
     // If the file does not exist, we can still clone
     if (!fi.exists() || fi.copy(sessionNameToFileName(clone).toString())) {
         d->m_sessions.insert(1, clone);
-        d->m_sessionDateTimes.insert(clone, QFileInfo(sessionNameToFileName(clone).toString()).lastModified());
+        d->m_sessionDateTimes.insert(clone, sessionNameToFileName(clone).toFileInfo().lastModified());
         return true;
     }
     return false;

src/plugins/qbsprojectmanager/qbsprojectimporter.cpp

@@ -116,7 +116,7 @@ static QStringList candidatesForDirectory(const QString &dir)
 
 QStringList QbsProjectImporter::importCandidates()
 {
-    const QString projectDir = QFileInfo(projectFilePath().toString()).absolutePath();
+    const QString projectDir = projectFilePath().toFileInfo().absolutePath();
     QStringList candidates = candidatesForDirectory(projectDir);
 
     QSet<QString> seenCandidates;