gha: build - test build with Qt 6.7.3 (preview bug); var init

Author: codeling

.github/workflows/build.yml

@@ -22,7 +22,7 @@ env:
   ITK_CMAKE_OPTIONS: -DBUILD_SHARED_LIBS=ON -DBUILD_TESTING:BOOL=OFF -DITK_USE_64BITS_IDS:BOOL=ON -DModule_ITKReview:BOOL=ON -DModule_HigherOrderAccurateGradient:BOOL=ON -DModule_SplitComponents:BOOL=ON -DModule_ITKVtkGlue:BOOL=ON
   OPENIA_CMAKE_OPTIONS: -DopeniA_CUDA_ENABLED:BOOL=OFF -DModule_CommonImageFilters:BOOL=ON -DModule_FeatureCharacteristics:BOOL=ON -DModule_MetaFilters:BOOL=ON -DModule_Metrics:BOOL=ON -DModule_Segmentation:BOOL=ON -DModule_Surfaces:BOOL=ON -DModule_4DCT:BOOL=ON -DModule_AdaptiveThreshold:BOOL=ON -DModule_BoneThickness:BOOL=ON -DModule_CompVis:BOOL=ON -DModule_DreamCaster:BOOL=ON -DModule_DynamicVolumeLines:BOOL=ON -DModule_FeatureAnalyzer:BOOL=ON -DModule_FeatureAnalyzerComputation:BOOL=ON -DModule_FeatureScout:BOOL=ON -DModule_FiAKEr:BOOL=ON -DModule_FilterPreview:BOOL=ON -DModule_FoamCharacterization:BOOL=ON -DModule_FuzzyFeatureTracking:BOOL=ON -DModule_GEMSe:BOOL=ON -DModule_InSpectr:BOOL=ON -DModule_Labelling:BOOL=ON -DModule_NModalTF:BOOL=ON -DModule_Remote:BOOL=ON -DModule_TripleHistogramTF:BOOL=ON -DModule_Uncertainty:BOOL=ON -DModule_VolumePlayer:BOOL=ON
   OPENIA_BUILD_VERSION: nightly
-  QT_VERSION: 6.8.2
+  QT_VERSION: 6.7.3
   VTK_VERSION: 9.4.1
   VTK_SHORTVER: 9.4
   ITK_VERSION: 5.4.2

libs/gui/iARawFileParamDlg.h

@@ -41,7 +41,7 @@ class iARawFileParamDlg : public QObject
 	qint64 m_fileSize;
 	QLabel * m_proposedSizeLabel = nullptr;
 	QWidget* m_previewContainer = nullptr;
-	iAChartWithFunctionsWidget* m_chart;
+	iAChartWithFunctionsWidget* m_chart = nullptr;
 	iAParameterDlg* m_inputDlg = nullptr;
 	bool m_accepted = false;
 	bool m_brightTheme;