Fixed some memory leaks.

cmdline.h

 
 #ifndef CMDLINE_PARSER_VERSION
 /** @brief the program version */
-#define CMDLINE_PARSER_VERSION "v3.1.3"
+#define CMDLINE_PARSER_VERSION "v3.1.4"
 #endif
 
 /** @brief Where the command line options are stored */

main.cpp

     int hmem = 0;
     int minimumsize = options.min_arg;
     int maximumsize = options.max_arg;
+    cmdline_parser_free( &options );
 
     // First we set up the x interface and grab the mouse,
     // if we fail for either we exit immediately.

options.ggo

 package "slop"
-version "v3.1.3"
+version "v3.1.4"
 usage "slop [options]"
 description "slop (Select Operation) is an application that queries for a selection from the user and prints the region to stdout."
 versiontext "Copyright (C) 2014 Dalton Nell, GPLv3"

x.cpp

         XSelectInput( m_display, children[ i ], event_mask );
         selectAllInputs( children[ i ], event_mask );
     }
+    free( children );
 }
 
 // Grabs the cursor, be wary that setCursor changes the mouse masks.
         // Try to find the actual decorations.
         test = win;
         int status = XQueryTree( xengine->m_display, test, &root, &parent, &childlist, &ujunk);
+        free( childlist );
         while( parent != root ) {
             if ( !parent || !status ) {
                 break;
             }
             test = parent;
             status = XQueryTree( xengine->m_display, test, &root, &parent, &childlist, &ujunk);
+            free( childlist );
         }
         // Once found, proceed normally.
         if ( test && parent == root && status ) {

x.hpp

 #include <X11/cursorfont.h>
 #include <X11/extensions/shape.h>
 
+#include <stdlib.h>
 #include <cstring>
 #include <cstdlib>
 #include <cmath>