logic: fix initialization of source groups

SourceGroups have been initialized with wrong default values which
have later been used to write for writing the ProjectSettings file
if not overwritten.

src/lib/settings/SourceGroupSettings.cpp

@@ -6,6 +6,10 @@ SourceGroupSettings::SourceGroupSettings(const std::string& id, SourceGroupType
 	: m_projectSettings(projectSettings)
 	, m_id(id)
 	, m_type(type)
+	, m_standard("")
+	, m_sourcePaths(std::vector<FilePath>())
+	, m_excludePaths(std::vector<FilePath>())
+	, m_sourceExtensions(std::vector<std::string>())
 {
 }
 

src/lib/settings/SourceGroupSettingsCxx.cpp

@@ -4,6 +4,12 @@
 
 SourceGroupSettingsCxx::SourceGroupSettingsCxx(const std::string& id, SourceGroupType type, const ProjectSettings* projectSettings)
 	: SourceGroupSettings(id, type, projectSettings)
+	, m_headerSearchPaths(std::vector<FilePath>())
+	, m_frameworkSearchPaths(std::vector<FilePath>())
+	, m_compilerFlags(std::vector<std::string>())
+	, m_useSourcePathsForHeaderSearch(false)
+	, m_hasDefinedUseSourcePathsForHeaderSearch(false)
+	, m_compilationDatabasePath(FilePath())
 {
 }
 

src/lib/settings/SourceGroupSettingsJava.cpp

@@ -4,6 +4,10 @@
 
 SourceGroupSettingsJava::SourceGroupSettingsJava(const std::string& id, SourceGroupType type, const ProjectSettings* projectSettings)
 	: SourceGroupSettings(id, type, projectSettings)
+	, m_classpaths(std::vector<FilePath>())
+	, m_mavenProjectFilePath(FilePath())
+	, m_mavenDependenciesDirectory(FilePath())
+	, m_shouldIndexMavenTests(false)
 {
 }