typedef struct error fixed for bcc

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7345 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/db.cpp

@@ -1939,11 +1939,11 @@ which always returns the columns in the order they were created.
 
 */
 
-typedef struct _TableColumns
+typedef struct
 {
   int noCols;
   wxDbColInf *colInf;
-};
+} _TableColumns;
 
 wxDbColInf *wxDb::GetColumns(char *tableName[], const char* WXUNUSED(userID))
 {