Make minijail_run_internal static

It isn't called from outside libminijail.c.

Change-Id: I1c3f9f86b6dec25ef551b0c06ade31f9eb4d0429
Signed-off-by: Dylan Reid <dgreid@chromium.org>
diff --git a/libminijail.c b/libminijail.c
index a9521b5..0249505 100644
--- a/libminijail.c
+++ b/libminijail.c
@@ -2087,9 +2087,9 @@
 	pid_t *pchild_pid;
 };
 
-int minijail_run_internal(struct minijail *j,
-                          const struct minijail_run_config *config,
-                          struct minijail_run_status *status_out);
+static int minijail_run_internal(struct minijail *j,
+				 const struct minijail_run_config *config,
+				 struct minijail_run_status *status_out);
 
 int API minijail_run(struct minijail *j, const char *filename,
 		     char *const argv[])
@@ -2183,9 +2183,9 @@
 	return minijail_run_internal(j, &config, &status);
 }
 
-int minijail_run_internal(struct minijail *j,
-			  const struct minijail_run_config *config,
-			  struct minijail_run_status *status_out)
+static int minijail_run_internal(struct minijail *j,
+				 const struct minijail_run_config *config,
+				 struct minijail_run_status *status_out)
 {
 	char *oldenv, *oldenv_copy = NULL;
 	pid_t child_pid;