Fix status bar text display issue in dark mode

Fix incorrect text size calculation for drawing the dark mode status bar
which can cause an invalid character to be displayed.

Fix #10564, close #10611

PowerEditor/src/WinControls/StatusBar/StatusBar.cpp

@@ -154,8 +154,9 @@ LRESULT CALLBACK StatusBarSubclass(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM l
 
 				DWORD cchText = 0;
 				cchText = LOWORD(SendMessage(hWnd, SB_GETTEXTLENGTH, i, 0));
-				str.resize(cchText + 1);
-				LRESULT lr = SendMessage(hWnd, SB_GETTEXT, i, (LPARAM)str.data());
+				str.resize(cchText + 1); // technically the std::wstring might not have an internal null character at the end of the buffer, so add one
+				LRESULT lr = SendMessage(hWnd, SB_GETTEXT, i, (LPARAM)&str[0]);
+				str.resize(cchText); // remove the extra NULL character
 				bool ownerDraw = false;
 				if (cchText == 0 && (lr & ~(SBT_NOBORDERS | SBT_POPOUT | SBT_RTLREADING)) != 0)
 				{