krnl386.exe16: Do not omit mandatory argument for VirtualProtect.

dlls/krnl386.exe16/dosmem.c

@@ -302,6 +302,7 @@ BOOL DOSMEM_InitDosMemory(void)
 {
     static BOOL done;
     static HANDLE hRunOnce;
+    DWORD old_prot;
 
     if (done) return TRUE;
 
@@ -317,7 +318,7 @@ BOOL DOSMEM_InitDosMemory(void)
 	    /* ok, we're the winning thread */
             if (!(ret = VirtualProtect( DOSMEM_dosmem + DOSMEM_protect,
                                         DOSMEM_SIZE - DOSMEM_protect,
-                                        PAGE_READWRITE, NULL )))
+                                        PAGE_READWRITE, &old_prot )))
                 ERR("Cannot load access low 1Mb, DOS subsystem unavailable\n");
             RemoveVectoredExceptionHandler( vectored_handler );
 
@@ -650,10 +651,11 @@ UINT DOSMEM_Available(void)
 BOOL DOSMEM_MapDosLayout(void)
 {
     static BOOL already_mapped;
+    DWORD old_prot;
 
     if (!already_mapped)
     {
-        if (DOSMEM_dosmem || !VirtualProtect( NULL, DOSMEM_SIZE, PAGE_EXECUTE_READWRITE, NULL ))
+        if (DOSMEM_dosmem || !VirtualProtect( NULL, DOSMEM_SIZE, PAGE_EXECUTE_READWRITE, &old_prot ))
         {
             ERR( "Need full access to the first megabyte for DOS mode\n" );
             ExitProcess(1);

dlls/krnl386.exe16/dosvm.c

@@ -827,6 +827,7 @@ LPVOID DOSVM_AllocDataUMB( DWORD size, WORD *segment, WORD *selector )
  */
 void DOSVM_InitSegments(void)
 {
+    DWORD old_prot;
     LPSTR ptr;
     int   i;
 
@@ -966,7 +967,7 @@ void DOSVM_InitSegments(void)
     /*
      * As we store code in UMB we should make sure it is executable
      */
-    VirtualProtect((void *)DOSVM_UMB_BOTTOM, DOSVM_UMB_TOP - DOSVM_UMB_BOTTOM, PAGE_EXECUTE_READWRITE, NULL);
+    VirtualProtect((void *)DOSVM_UMB_BOTTOM, DOSVM_UMB_TOP - DOSVM_UMB_BOTTOM, PAGE_EXECUTE_READWRITE, &old_prot);
 
     event_notifier = CreateEventW(NULL, FALSE, FALSE, NULL);
 }