[pim/kcalutils] src: clang-tidy misc-const-correctness fix

Git commit 0c1bc1bc4326c47bdd904bcfd15819337bfcf937 by Allen Winter.
Committed on 05/08/2026 at 19:57.
Pushed by winterz into branch 'master'.

clang-tidy misc-const-correctness fix

Fixes:
```
+ src/incidenceformatter.cpp:
  -  2623:variable 'calStr' of type 'QString' can be declared 'const'
```

M  +1    -1    src/incidenceformatter.cpp

https://invent.kde.org/pim/kcalutils/-/commit/0c1bc1bc4326c47bdd904bcfd15819337bfcf937

diff --git a/src/incidenceformatter.cpp b/src/incidenceformatter.cpp
index 6f4c83183..86271223a 100644
--- a/src/incidenceformatter.cpp
+++ b/src/incidenceformatter.cpp
@@ -2620,7 +2620,7 @@ QString IncidenceFormatter::ToolTipVisitor::generateToolTip(const Incidence::Ptr
     tmp += QLatin1StringView("<b>") + incidence->richSummary() + QLatin1StringView("</b>");
     tmp += QLatin1StringView("<hr>");
 
-    QString calStr = mLocation;
+    const QString calStr = mLocation;
     if (!calStr.isEmpty()) {
         tmp += QLatin1StringView("<i>") + i18n("Calendar:") + QLatin1StringView("</i>") + QLatin1StringView("&nbsp;");
         tmp += calStr;