Close handles properly

Change-Id: If8620229d41ae9b6c0a1714967a8bb6d51d3ba0d
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/179939
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
Tested-by: Jenkins

desktop/win32/source/QuickStart/QuickStart.cxx

@@ -68,6 +68,8 @@ static bool launchSoffice( )
         if ( !bSuccess )
             return false;
 
+        CloseHandle(aProcessInfo.hProcess);
+        CloseHandle(aProcessInfo.hThread);
         return true;
     }
     else

sal/osl/w32/procimpl.cxx

@@ -576,6 +576,8 @@ oslProcessError SAL_CALL osl_executeProcess_WithRedirectedIO(
 
             return osl_Process_E_None;
         }
+        else
+            CloseHandle(process_info.hProcess);
     }
 
     /* if an error occurred we have to close the server side pipe ends too */

setup_native/source/win32/customactions/reg_dlls/reg_dlls.cxx

@@ -168,6 +168,7 @@ void RegDLL(MSIHANDLE hInst, const std::wstring& sArgs, bool bUnreg)
         if (!CreateProcessW(sRegSvr32.c_str(), const_cast<LPWSTR>(sCmd.c_str()), nullptr, nullptr,
                             FALSE, CREATE_NO_WINDOW, nullptr, nullptr, &si, &pi))
             ThrowLastError("CreateProcessW");
+        CloseHandle(pi.hThread);
         auto aCloseProcHandleGuard(Guard(pi.hProcess));
         WriteLog(hInst, "CreateProcessW succeeded");