Fix GCC 12 warning about use of uninitialized value

False positive, it couldn't be. `ok` could only become true if
var.toInt() was called, which means some value was assigned to `value`.
But anyway, we can simplify this because QVariant::toInt() returns 0
when it sets ok to false.

classviewutils.cpp:78:50: warning: ‘value’ may be used uninitialized [-Wmaybe-uninitialized]
   78 |     return SymbolInformation(name, type, iconType);
      |                                                  ^

Change-Id: Iba16e8ea451b444ab213fffd16f4918c45228f2c
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/classview/classviewutils.cpp

@@ -65,15 +65,7 @@ SymbolInformation symbolInformationFromItem(const QStandardItem *item)
 
     const QString &name = item->data(Constants::SymbolNameRole).toString();
     const QString &type = item->data(Constants::SymbolTypeRole).toString();
-    int iconType = 0;
+    int iconType = item->data(Constants::IconTypeRole).toInt();
-
-    QVariant var = item->data(Constants::IconTypeRole);
-    bool ok = false;
-    int value;
-    if (var.isValid())
-        value = var.toInt(&ok);
-    if (ok)
-        iconType = value;
 
     return SymbolInformation(name, type, iconType);
 }