change deprecated @setCold(true) to @branchHint(.cold)

New `@branchHint` builtin is more expressive than `@setCold`, therefore
latter was removed.
See https://github.com/ziglang/zig/pull/21214 .

Signed-off-by: Eric Joldasov <bratishkaerik@landless-city.net>

src/bin_export.zig

@@ -118,7 +118,7 @@ pub const Thread = struct {
     }
 
     fn flush(t: *Thread, expected_len: usize) void {
-        @setCold(true);
+        @branchHint(.cold);
         const block = createBlock(t);
         defer block.deinit();
 

src/bin_reader.zig

@@ -63,7 +63,7 @@ inline fn bigu32(v: [4]u8) u32 { return std.mem.bigToNative(u32, @bitCast(v)); }
 inline fn bigu64(v: [8]u8) u64 { return std.mem.bigToNative(u64, @bitCast(v)); }
 
 fn die() noreturn {
-    @setCold(true);
+    @branchHint(.cold);
     if (global.lastitem) |e| ui.die("Error reading item {x} from file\n", .{e})
     else ui.die("Error reading from file\n", .{});
 }

src/json_export.zig

@@ -73,7 +73,7 @@ pub const Writer = struct {
     dir_entry_open: bool = false,
 
     fn flush(ctx: *Writer, bytes: usize) void {
-        @setCold(true);
+        @branchHint(.cold);
         // This can only really happen when the root path exceeds PATH_MAX,
         // in which case we would probably have error'ed out earlier anyway.
         if (bytes > ctx.buf.len) ui.die("Error writing JSON export: path too long.\n", .{});

src/json_import.zig

@@ -83,7 +83,7 @@ const Parser = struct {
     }
 
     fn fill(p: *Parser) void {
-        @setCold(true);
+        @branchHint(.cold);
         p.rdoff = 0;
         p.rdsize = (if (p.zstd) |z| z.read(p.rd, &p.buf) else p.rd.read(&p.buf)) catch |e| switch (e) {
             error.IsDir => p.die("not a file"), // should be detected at open() time, but no flag for that...
@@ -133,7 +133,7 @@ const Parser = struct {
     }
 
     fn stringContentSlow(p: *Parser, buf: []u8, head: u8, off: usize) []u8 {
-        @setCold(true);
+        @branchHint(.cold);
         var b = head;
         var n = off;
         while (true) {

src/main.zig

@@ -63,7 +63,7 @@ pub const allocator = std.mem.Allocator{
 
 // Custom panic impl to reset the terminal before spewing out an error message.
 pub fn panic(msg: []const u8, error_return_trace: ?*std.builtin.StackTrace, ret_addr: ?usize) noreturn {
-    @setCold(true);
+    @branchHint(.cold);
     ui.deinit();
     std.debug.panicImpl(error_return_trace, ret_addr orelse @returnAddress(), msg);
 }

src/ui.zig

@@ -37,7 +37,7 @@ pub fn quit() noreturn {
 // no clue if ncurses will consistently report OOM, but we're not handling that
 // right now.
 pub fn oom() void {
-    @setCold(true);
+    @branchHint(.cold);
     if (main_thread == std.Thread.getCurrentId()) {
         const haveui = inited;
         deinit();