Reset emu state after a failing DllMain

call_dll_entrypoint() caught the DllMain UcError and restored registers but
left ql._state at STARTED, since emu_start() only clears it on success. The
'emu_state is not STARTED' gate then silently skipped DllMain for every DLL
loaded afterward. Reset the state to STOPPED on the exception path.

qiling/loader/pe.py

@@ -462,6 +462,10 @@ class Process:
             self.ql.log.error(f'Error encountered while running {dll_name} DllMain, bailing')
 
             self.ql.arch.regs.restore(regs_state)
+
+            # emu_start leaves the state at STARTED when it raises; reset it so a single
+            # failing DllMain does not gate every subsequently loaded DLL's entry point.
+            self.ql._state = QL_STATE.STOPPED
         else:
             fcall.cc.unwind(len(args))