Initialise various fields and variables

src/openrct2/network/http.h

@@ -31,7 +31,7 @@ typedef struct http_request_t {
     void *tag;
     const char *method;
     const char *url;
-    http_data_type type;
+    http_data_type type = HTTP_DATA_NONE;
     size_t size;
     union {
         const json_t *root;

src/openrct2/network/network.h

@@ -234,7 +234,7 @@ private:
     std::string _chatLogFilenameFormat = "%Y%m%d-%H%M%S.txt";
     std::string _serverLogPath;
     std::string _serverLogFilenameFormat = "-%Y%m%d-%H%M%S.txt";
-    OpenRCT2::IPlatformEnvironment * _env;
+    OpenRCT2::IPlatformEnvironment * _env = nullptr;
 
     void UpdateServer();
     void UpdateClient();

src/openrct2/title/TitleScreen.cpp

@@ -38,7 +38,7 @@ extern "C"
 }
 
 // TODO Remove when no longer required.
-static TitleScreen * _singleton;
+static TitleScreen * _singleton = nullptr;
 
 TitleScreen::TitleScreen()
 {

src/openrct2/title/TitleScreen.h

@@ -41,8 +41,8 @@ public:
 private:
     ITitleSequencePlayer *  _sequencePlayer = nullptr;
     uint16                  _loadedTitleSequenceId = UINT16_MAX;
-    uint16                  _currentSequence;
-    bool                    _hideVersionInfo;
+    uint16                  _currentSequence = UINT16_MAX;
+    bool                    _hideVersionInfo = false;
 
     void TitleInitialise();
     void TryLoadSequence();