ntdll: Fall back to the current loader if the corresponding 32/64-bit loader isn't found.

dlls/ntdll/unix/env.c

@@ -1863,6 +1863,7 @@ static void init_peb( RTL_USER_PROCESS_PARAMETERS *params, void *module )
         NtCurrentTeb()->Tib.ExceptionList = (void *)((char *)NtCurrentTeb() + teb_offset);
         wow_peb = (PEB32 *)((char *)peb + page_size);
         set_thread_id( NtCurrentTeb(),  GetCurrentProcessId(), GetCurrentThreadId() );
+        ERR( "starting %s in experimental wow64 mode\n", debugstr_us(&params->ImagePathName) );
     }
 #endif
 

dlls/ntdll/unix/loader.c

@@ -706,14 +706,9 @@ static NTSTATUS loader_exec( char **argv, WORD machine )
                 strcpy( argv[1], wineloader );
                 strcat( argv[1], "64" );
                 preloader_exec( argv );
-                return STATUS_INVALID_IMAGE_FORMAT;
-            }
             }
-        else if ((argv[1] = remove_tail( wineloader, "64" )))
-        {
-            preloader_exec( argv );
-            return STATUS_INVALID_IMAGE_FORMAT;
         }
+        else if ((argv[1] = remove_tail( wineloader, "64" ))) preloader_exec( argv );
     }
 
     argv[1] = strdup( wineloader );