Auto merge of #131434 - onur-ozkan:fix-if-unchanged-test, r=onur-ozkan

fix `ci_rustc_if_unchanged_logic` test

Kind a typo from #122709, which makes `ci_rustc_if_unchanged_logic` test to fail in any PR that has a change in "library" tree (e.g., #131418 (comment)). This fixes that.

r? ghost

src/bootstrap/src/core/builder/tests.rs

@@ -239,7 +239,7 @@ fn ci_rustc_if_unchanged_logic() {
     builder.run_step_descriptions(&Builder::get_step_descriptions(config.cmd.kind()), &[]);
 
     let compiler_path = build.src.join("compiler");
-    let library_path = build.src.join("compiler");
+    let library_path = build.src.join("library");
 
     let commit =
         get_closest_merge_commit(Some(&builder.config.src), &builder.config.git_config(), &[