dir.h: remove duplicate forward declaration of struct repository

From: Abhijeetsingh Meena <[email protected]>

The struct repository; forward declaration appears twice in dir.h:
once at line 10 and again at line 46. This duplication is unnecessary and likely unintentional.

Removing the second declaration has no impact on compilation, as verified by a clean build.

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Remove duplicate forward declaration of struct repository

Summary
=======

While exploring how Git searches for .gitignore files and manages ignored files, I came across dir.h. While reading through the file, I noticed that struct repository; was forward-declared twice. This duplication appears unnecessary, and removing the second declaration compiles cleanly.

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-1879%2FEthan0456%2Fcleanup%2Fdeduplicate-repo-fwd-decl-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-1879/Ethan0456/cleanup/deduplicate-repo-fwd-decl-v1
Pull-Request: https://github.com/gitgitgadget/git/pull/1879

 dir.h | 1 -
 1 file changed, 1 deletion(-)

index a3a2f00f5d9..e659c47ad77 100644
@@ -43,7 +43,6 @@ struct repository;
  *
  */
 
-struct repository;
 
 struct dir_entry {
 	unsigned int len;

base-commit: ef8ce8f3d4344fd3af049c17eeba5cd20d98b69f

gitgitgadget

"Abhijeetsingh Meena via GitGitGadget" <[email protected]>

Thanks. Will apply.