Stop passing the same resource multiple times when building ParseSess

Author: bjorn3

compiler/rustc_parse/src/parser/tests.rs

@@ -27,7 +27,7 @@ use crate::parser::{ForceCollect, Parser};
 use crate::{new_parser_from_source_str, source_str_to_stream, unwrap_or_emit_fatal};
 
 fn psess() -> ParseSess {
-    ParseSess::new(vec![crate::DEFAULT_LOCALE_RESOURCE, crate::DEFAULT_LOCALE_RESOURCE])
+    ParseSess::new(vec![crate::DEFAULT_LOCALE_RESOURCE])
 }
 
 /// Map string to parser (via tts).
@@ -42,10 +42,8 @@ fn string_to_parser(psess: &ParseSess, source_str: String) -> Parser<'_> {
 fn create_test_handler(theme: OutputTheme) -> (DiagCtxt, Lrc<SourceMap>, Arc<Mutex<Vec<u8>>>) {
     let output = Arc::new(Mutex::new(Vec::new()));
     let source_map = Lrc::new(SourceMap::new(FilePathMapping::empty()));
-    let fallback_bundle = rustc_errors::fallback_fluent_bundle(
-        vec![crate::DEFAULT_LOCALE_RESOURCE, crate::DEFAULT_LOCALE_RESOURCE],
-        false,
-    );
+    let fallback_bundle =
+        rustc_errors::fallback_fluent_bundle(vec![crate::DEFAULT_LOCALE_RESOURCE], false);
     let mut emitter = HumanEmitter::new(Box::new(Shared { data: output.clone() }), fallback_bundle)
         .sm(Some(source_map.clone()))
         .diagnostic_width(Some(140));