rem: char          *ext;
add: char          *start, *ext;
context: Ns_GetMimeType(char *file){    char          *ext;    Ns_DString     ds;    Tcl_HashEntry *hePtr;    ext = strrchr(file, '.');    if (ext == NULL) {	return noextType;    }    Ns_DStringInit(&ds);    ext = LowerDString(&ds, ext);    hePtr = Tcl_FindHashEntry(&types, ext);    if (hePtr == NULL) {	return defaultType;    }    return Tcl_GetHashValue(hePtr);}