Fix a bug. (Thanks to Ged).

svn path=/trunk/; revision=26329

reactos/base/applications/charmap/charmap.c

@@ -262,8 +262,11 @@ DlgProc(HWND hDlg,
 
                     ch = SendMessage(hMap, FM_GETCHAR, 0, 0);
 
-                    AddCharToSelection(GetDlgItem(hDlg, IDC_TEXTBOX),
-                                       ch);
+                    if (ch)
+                    {
+                        AddCharToSelection(GetDlgItem(hDlg, IDC_TEXTBOX),
+                                           ch);
+                    }
 
                     break;
                 }

reactos/base/applications/charmap/map.c

@@ -492,6 +492,7 @@ MapWndProc(HWND hwnd,
 
         case FM_GETCHAR:
         {
+            if (!infoPtr->pActiveCell) return NULL;
             return infoPtr->pActiveCell->ch;
         }