Fix: do not export custom types in the extern API

Some compilers give linking problems when exporting 'uint32_t' as a
return type in the external API. Use generic types instead.

Signed-off-by: Vicent Marti <tanoku@gmail.com>

src/git/tree.h

@@ -68,7 +68,7 @@ GIT_EXTERN(const git_tree_entry *) git_tree_entry_byindex(git_tree *tree, int id
  * @param entry a tree entry
  * @return attributes as an integer
  */
-GIT_EXTERN(uint32_t) git_tree_entry_attributes(const git_tree_entry *entry);
+GIT_EXTERN(unsigned int) git_tree_entry_attributes(const git_tree_entry *entry);
 
 /**
  * Get the filename of a tree entry

src/tree.c

@@ -50,7 +50,7 @@ git_tree *git_tree_lookup(git_repository *repo, const git_oid *id)
 	return (git_tree *)git_repository_lookup(repo, id, GIT_OBJ_TREE);
 }
 
-uint32_t git_tree_entry_attributes(const git_tree_entry *entry)
+unsigned int git_tree_entry_attributes(const git_tree_entry *entry)
 {
 	return entry->attr;
 }

src/tree.h

@@ -5,7 +5,7 @@
 #include "repository.h"
 
 struct git_tree_entry {
-	uint32_t attr;
+	unsigned int attr;
 	char *filename;
 	git_oid oid;