Allow building with CLang's scan-build.

Index: uudecode.c
--- uudecode.c.orig
+++ uudecode.c
@@ -23,6 +23,8 @@
  * SOFTWARE.
  */
 #include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
 #include <ctype.h>
 #include <string.h>
 #include "xmalloc.h"
@@ -35,6 +37,7 @@ extern FILE *os_createnewfile(char *fname);
 
 static FILE *startDescFile(char *fname);
 
+void uudecodeline(char *line, FILE *outfile);
 
 /* Length of a normal uuencoded line, including newline */
 #define UULENGTH 62
@@ -826,7 +829,7 @@ uudecodefiles(char *dir, int nparts)
 /*
  * Decode a uuencoded line to 'outfile'
  */
-int uudecodeline(char *line, FILE *outfile)
+void uudecodeline(char *line, FILE *outfile)
 {
     int c, len;
 
@@ -845,7 +848,4 @@ int uudecodeline(char *line, FILE *outfile)
 	}
 	line += 4;
     }
-    return;
 }
-
-