Build fix attempt.

Build is broken on the buildbots but I don't reproduce the failure when
building on HAiku, apparently because the system-installed headers are
used.

src/bin/top.c

@@ -16,9 +16,10 @@
 #include <stdlib.h>
 #include <string.h>
 #include <OS.h>
-#include <termcap.h>
 #include <termios.h>
 
+#include "termcap.h"
+
 static const char IDLE_NAME[] = "idle thread ";
 static bigtime_t lastMeasure = 0;