Remove TODO comment

The function definition is correct, tested with the following addition
to example_color:

--- a/examples/simple_color/source/simple_color.d
+++ b/examples/simple_color/source/simple_color.d
@@ -4,6 +4,14 @@ import std.stdio : writeln;
 import std.string : toStringz;
 import deimos.ncurses;

+extern (C) {
+    int putcf(int v) {
+        move(2, 2);
+        printw("%d", v);
+        return OK;
+    }
+}
+
 int main()
 {
     initscr();
@@ -25,6 +33,7 @@ int main()
     attron(COLOR_PAIR(1));
     print_in_middle(stdscr, "Voila !!! In color...  =)", LINES / 2, 0, 0,);
     attroff(COLOR_PAIR(1));
+    vidputs(COLOR_PAIR(1), &putcf);

     getch();

Author: jaydg

source/deimos/ncurses/curses.d

@@ -783,7 +783,6 @@ int untouchwin(W:WINDOW)(W* win)
 {   return wtouchln(win, 0, getmaxy(win), 0); }
 void use_env(bool f);
 int vidattr(chtype c);
-//TODO check this.
 int vidputs(chtype, int function(int));
 int vline(C:chtype, N:int)(C ch, N n)
 {   return wvline(stdscr, ch, n); }