fix up a couple non-prototypes of the form foo() to be foo(void) -- found using -Wstrict-prototypes

src/bin/pg_basebackup/pg_basebackup.c

@@ -64,7 +64,7 @@ static PGconn *GetConnection(void);
 
 static void ReceiveTarFile(PGconn *conn, PGresult *res, int rownum);
 static void ReceiveAndUnpackTarFile(PGconn *conn, PGresult *res, int rownum);
-static void BaseBackup();
+static void BaseBackup(void);
 
 #ifdef HAVE_LIBZ
 static const char *
@@ -752,7 +752,7 @@ GetConnection(void)
 }
 
 static void
-BaseBackup()
+BaseBackup(void)
 {
 	PGresult   *res;
 	uint32		timeline;

src/interfaces/ecpg/include/ecpglib.h

@@ -92,7 +92,7 @@ void	   *ECPGget_var(int number);
 void		ECPGfree_auto_mem(void);
 
 #ifdef ENABLE_THREAD_SAFETY
-void		ecpg_pthreads_init();
+void		ecpg_pthreads_init(void);
 #endif
 
 #ifdef __cplusplus