Do not return on `void` helper methods

MSVC doesn't swallow that.

include/git2/blob.h

@@ -66,7 +66,7 @@ GIT_INLINE(int) git_blob_lookup(git_blob **blob, git_repository *repo, const git
 
 GIT_INLINE(void) git_blob_close(git_blob *blob)
 {
-	return git_object_close((git_object *) blob);
+	git_object_close((git_object *) blob);
 }
 
 

include/git2/commit.h

@@ -67,7 +67,7 @@ GIT_INLINE(int) git_commit_lookup(git_commit **commit, git_repository *repo, con
 
 GIT_INLINE(void) git_commit_close(git_commit *commit)
 {
-	return git_object_close((git_object *) commit);
+	git_object_close((git_object *) commit);
 }
 
 /**

include/git2/tag.h

@@ -66,7 +66,7 @@ GIT_INLINE(int) git_tag_lookup(git_tag **tag, git_repository *repo, const git_oi
 
 GIT_INLINE(void) git_tag_close(git_tag *tag)
 {
-	return git_object_close((git_object *) tag);
+	git_object_close((git_object *) tag);
 }
 
 

include/git2/tree.h

@@ -66,7 +66,7 @@ GIT_INLINE(int) git_tree_lookup(git_tree **tree, git_repository *repo, const git
 
 GIT_INLINE(void) git_tree_close(git_tree *tree)
 {
-	return git_object_close((git_object *) tree);
+	git_object_close((git_object *) tree);
 }