LLDB: incorrect code in LldbEngine::runCommand function

LLDB debugger doesn't start on Linux due to a bug.

Function LldbEngine::runCommand is called before the lldb is initialized (from fetch modules). Instead of ignoring the request, it shuts down the engine.

This code in qt-creator/src/plugins/debugger/lldb/lldbengine.cpp:128:

void LldbEngine::runCommand(const DebuggerCommand &cmd)
{
QTC_ASSERT(m_lldbProc.state() == QProcess::Running, notifyEngineIll());

Should be replaced with this code:

void LldbEngine::runCommand(const DebuggerCommand &cmd)
{
if( m_lldbProc.state() == QProcess::Running ){