Fix: Correct sizeof usage in DetourTransactionCommitEx (microsoft#331)

Replaced `sizeof(o->pTrampoline)` with `sizeof(*o->pTrampoline)` to correctly calculate the trampoline size when adjusting thread instruction pointers.

Author: hakujitsu7

src/detours.cpp

@@ -1950,7 +1950,7 @@ typedef ULONG_PTR DETOURS_EIP_TYPE;
                 if (o->fIsRemove) {
                     if (cxt.DETOURS_EIP >= (DETOURS_EIP_TYPE)(ULONG_PTR)o->pTrampoline &&
                         cxt.DETOURS_EIP < (DETOURS_EIP_TYPE)((ULONG_PTR)o->pTrampoline
-                                                             + sizeof(o->pTrampoline))
+                                                             + sizeof(*o->pTrampoline))
                        ) {
 
                         cxt.DETOURS_EIP = (DETOURS_EIP_TYPE)