glfs-truncate: Add missing int return types

Implicit ints are a historic C feature that was removed from the
language in 1999.

Author: fweimer-rh

src/glfs-truncate.c

@@ -297,6 +297,7 @@ init_state ()
         return state;
 }
 
+int
 gluster_get (glfs_t *fs, const char *filename) {
         glfs_fd_t *fd = NULL;
         int ret = -1;
@@ -327,7 +328,7 @@ gluster_get (glfs_t *fs, const char *filename) {
         return ret;
 }
 
-
+int
 truncate_without_context ()
 {
         glfs_t *fs = NULL;