setCAllocator

Replace custom malloc functions in netsurf libs with a global Zig allocator.

Signed-off-by: Francis Bouvier <francis@lightpanda.io>

src/main_shell.zig

@@ -1,6 +1,7 @@
 const std = @import("std");
 
 const jsruntime = @import("jsruntime");
+const setCAllocator = @import("calloc.zig").setCAllocator;
 
 const parser = @import("netsurf.zig");
 const apiweb = @import("apiweb.zig");
@@ -37,6 +38,10 @@ pub fn main() !void {
     var arena = std.heap.ArenaAllocator.init(gpa.allocator());
     defer arena.deinit();
 
+    var c_arena = std.heap.ArenaAllocator.init(std.heap.page_allocator);
+    defer c_arena.deinit();
+    setCAllocator(c_arena.allocator());
+
     // document
     const file = try std.fs.cwd().openFile("test.html", .{});
     defer file.close();