dev-tex/tectonic: Fix not closing files when spotless history is returned

This fixes the problem of checking if .bbl file changes, by backporting
a commit in master branch.

Upstream issue tracker:
https://github.com/tectonic-typesetting/tectonic/issues/1150

Upstream commit that is used in patch:
fbb145cd07

Signed-off-by: Ryan Wong <juan@juancord.xyz>

dev-tex/tectonic/files/tectonic-0.15.0-fix-internal-consistency-problem-bbl.patch

@@ -0,0 +1,32 @@
+From fbb145cd079497b8c88197276f92cb89685b4d54 Mon Sep 17 00:00:00 2001
+From: Rune Tynan <runetynan@gmail.com>
+Date: Tue, 20 Feb 2024 16:43:04 -0800
+Subject: [PATCH] Fix not closing files when spotless history is returned
+
+---
+ crates/engine_bibtex/src/lib.rs | 5 ++---
+ 1 file changed, 2 insertions(+), 3 deletions(-)
+
+diff --git a/crates/engine_bibtex/src/lib.rs b/crates/engine_bibtex/src/lib.rs
+index fd97b461d..61efc469c 100644
+--- a/crates/engine_bibtex/src/lib.rs
++++ b/crates/engine_bibtex/src/lib.rs
+@@ -333,9 +333,7 @@ pub(crate) fn bibtex_main(ctx: &mut Bibtex<'_, '_>, aux_file_name: &CStr) -> His
+ 
+     let res = inner_bibtex_main(ctx, &mut globals, aux_file_name);
+     match res {
+-        Ok(History::Spotless) => (),
+-        Ok(hist) => return hist,
+-        Err(BibtexError::Recover) => {
++        Err(BibtexError::Recover) | Ok(History::Spotless) => {
+             // SAFETY: bst_file guaranteed valid at this point
+             unsafe { peekable_close(ctx, ctx.bst_file) };
+             ctx.bst_file = None;
+@@ -345,6 +343,7 @@ pub(crate) fn bibtex_main(ctx: &mut Bibtex<'_, '_>, aux_file_name: &CStr) -> His
+             ttbc_output_close(ctx.engine, ctx.bbl_file);
+         }
+         Err(BibtexError::Fatal) => (),
++        Ok(hist) => return hist,
+     }
+ 
+     match get_history() {