changed third argument to size_t to match SCO prototype

lib/getpass.c

@@ -71,7 +71,7 @@
 #  define perror(x) fprintf(stderr, "Error in: %s\n", x)
 #endif
 
-char *getpass_r(const char *prompt, char *buffer, int buflen)
+char *getpass_r(const char *prompt, char *buffer, size_t buflen)
 {
   FILE *infp;
   FILE *outfp;

lib/getpass.h

@@ -3,6 +3,6 @@
 /*
  * Returning NULL will abort the continued operation!
  */
-char* getpass_r(char *prompt, char* buffer, int buflen );
+char* getpass_r(char *prompt, char* buffer, size_t buflen );
 
 #endif