Core: Work around more deprecations

Change-Id: Ib25134cb823ed14ce82a69aac6f03849b02862fa
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/coreplugin/find/basetextfind.cpp

@@ -140,7 +140,7 @@ void BaseTextFind::resetIncrementalSearch()
 
 void BaseTextFind::clearHighlights()
 {
-    highlightAll(QString(), nullptr);
+    highlightAll(QString(), {});
 }
 
 QString BaseTextFind::currentFindString() const
@@ -191,7 +191,7 @@ IFindSupport::Result BaseTextFind::findIncremental(const QString &txt, FindFlags
     if (found)
         highlightAll(txt, findFlags);
     else
-        highlightAll(QString(), nullptr);
+        highlightAll(QString(), {});
     return found ? Found : NotFound;
 }
 

src/plugins/coreplugin/find/currentdocumentfind.cpp

@@ -83,7 +83,7 @@ bool CurrentDocumentFind::supportsReplace() const
 
 FindFlags CurrentDocumentFind::supportedFindFlags() const
 {
-    QTC_ASSERT(m_currentFind, return nullptr);
+    QTC_ASSERT(m_currentFind, return {});
     return m_currentFind->supportedFindFlags();
 }
 

src/plugins/coreplugin/locator/locatorfiltertest.cpp

@@ -95,9 +95,9 @@ void ResultData::printFilterEntries(const ResultData::ResultDataList &entries, c
 {
     QTextStream out(stdout);
     if (!msg.isEmpty())
-        out << msg << endl;
+        out << msg << '\n';
     for (const ResultData &entry : entries) {
         out << "<< ResultData(_(\"" << entry.textColumn1 << "\"), _(\"" << entry.textColumn2
-            <<  "\"))" << endl;
+            <<  "\"))\n";
     }
 }