Changed // comments to /* */ so WINE compiles with non-gcc compilers
again.

diff --git a/dlls/comctl32/header.c b/dlls/comctl32/header.c
index 50edfa4..b0520e5 100644
--- a/dlls/comctl32/header.c
+++ b/dlls/comctl32/header.c
@@ -174,7 +174,7 @@
 	if (phdi->fmt & HDF_IMAGE) {
 
 
-//	    ImageList_Draw (infoPtr->himl, phdi->iImage,...);
+/*	    ImageList_Draw (infoPtr->himl, phdi->iImage,...); */
 	}
 
         if ((phdi->fmt & HDF_STRING) && (phdi->pszText)) {
@@ -459,8 +459,8 @@
     nmitem.hbm = infoPtr->items[iItem].hbm;
     nmitem.pszText = NULL;
     nmitem.cchTextMax = 0;
-//    nmitem.pszText = infoPtr->items[iItem].pszText;
-//    nmitem.cchTextMax = infoPtr->items[iItem].cchTextMax;
+/*    nmitem.pszText = infoPtr->items[iItem].pszText; */
+/*    nmitem.cchTextMax = infoPtr->items[iItem].cchTextMax; */
     nmitem.fmt = infoPtr->items[iItem].fmt;
     nmitem.lParam = infoPtr->items[iItem].lParam;
     nmitem.iOrder = infoPtr->items[iItem].iOrder;
@@ -682,7 +682,7 @@
 }
 
 
-// << HEADER_GetOrderArray >>
+/* << HEADER_GetOrderArray >> */
 
 
 __inline__ static LRESULT
@@ -1050,7 +1050,7 @@
 }
 
 
-// << HEADER_SetOrderArray >>
+/* << HEADER_SetOrderArray >> */
 
 
 __inline__ static LRESULT
@@ -1450,7 +1450,7 @@
 	case HDM_GETITEMRECT:
 	    return HEADER_GetItemRect (wndPtr, wParam, lParam);
 
-//	case HDM_GETORDERARRAY:
+/*	case HDM_GETORDERARRAY: */
 
 	case HDM_GETUNICODEFORMAT:
 	    return HEADER_GetUnicodeFormat (wndPtr);
@@ -1476,7 +1476,7 @@
 	case HDM_SETITEM32W:
 	    return HEADER_SetItem32W (wndPtr, wParam, lParam);
 
-//	case HDM_SETORDERARRAY:
+/*	case HDM_SETORDERARRAY: */
 
 	case HDM_SETUNICODEFORMAT:
 	    return HEADER_SetUnicodeFormat (wndPtr, wParam);
@@ -1509,7 +1509,7 @@
         case WM_MOUSEMOVE:
             return HEADER_MouseMove (wndPtr, wParam, lParam);
 
-//	case WM_NOTIFYFORMAT:
+/*	case WM_NOTIFYFORMAT: */
 
         case WM_PAINT:
             return HEADER_Paint (wndPtr, wParam);