comdlg32: Janitorial: write-strings warning fix

[Andrew Talbot]

Changelog:
    Janitorial: Fix a write-strings compiler warning in 
dlls/comdlg32/printdlg.c

diff -urN wine/dlls/comdlg32/printdlg.c wine2/dlls/comdlg32/printdlg.c
--- wine/dlls/comdlg32/printdlg.c	2006-05-23 17:24:34.000000000 +0100
+++ wine2/dlls/comdlg32/printdlg.c	2006-05-23 19:20:52.000000000 +0100
@@ -325,8 +325,9 @@
 	    lppd->Flags &= ~PD_PAGENUMS;
 
 	if (IsDlgButtonChecked(hDlg, chx1) == BST_CHECKED) {/* Print to file */
+	    static CHAR file[] = {'F','I','L','E',':',0};
 	    lppd->Flags |= PD_PRINTTOFILE;
-	    pi->pPortName = "FILE:";
+	    pi->pPortName = file;
 	}
 
 	if (IsDlgButtonChecked(hDlg, chx2) == BST_CHECKED) { /* Collate */