code cleanup, fixed memory leaks, ansi color handling

Author: diegocr

README

@@ -16,10 +16,10 @@ Why am I creating this version, you may ask? Well, during some of my
 telnet sessions i've noticed extraneous characters being returned and
 such, so... basically, this version should fix those issues.
 
-Altogether with the code, you'll find a nc.exe executable, which was
-compiled using GCC 4.5.0 and tested under Windows 7 (HP) 32-bits
+You can also find there a nc.exe executable, which was compiled
+using GCC 4.8.1 and tested under Windows 7 (HP) 32-bits.
 
-md5sum: 243c24020d658f07521c97d3639f839c  nc.exe
+SHA1(nc.exe)= c5e19c02a9a1362c67ea87c1e049ce9056425788
 
 If you have some question, feel free to contact me.
 

doexec.o

@@ -32,7 +32,7 @@
 #define HAVE_FLOCK		/* otherwise it's lockf() */
 
 /* if you don't have setsid(), you might have setpgrp().
-#define HAVE_SETSID
+#define HAVE_SETSID */
 
 /* random() is generally considered better than rand() */
 /* xxx: rand48? */
@@ -44,7 +44,7 @@
 /* different kinds of term ioctls.  How to recognize them, very roughly:
    sysv/POSIX_ME_HARDER:  termio[s].h, struct termio[s], tty.c_*[]
    bsd/old stuff:  sgtty.h, ioctl(TIOCSETP), sgttyb.sg_*, tchars.t_*
-#define HAVE_TERMIOS
+#define HAVE_TERMIOS */
 
 /* dbm vs ndbm */
 #define HAVE_NDBM
@@ -130,7 +130,7 @@ There's a BIG swamp lurking where network code of any sort lives.
 /* ======================== */
 
 /* By turning OFF various bits of the above,  you can customize for
-   a given platform.  /*
+   a given platform.  */
 
 /* DOS boxes, with MSC; you may need to adapt to a different compiler. */
 #ifdef MSDOS