[Build/MacOS] Fix sprintf deprecation warnings

Convert to snprintf in trace_viewer and suppress in 3pp stb header.

src/xenia/gpu/trace_dump.cc

@@ -26,7 +26,14 @@
 #define STB_IMAGE_WRITE_IMPLEMENTATION
 #undef _CRT_SECURE_NO_WARNINGS
 #undef _CRT_NONSTDC_NO_DEPRECATE
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#endif
 #include "third_party/stb/stb_image_write.h"
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
 
 DEFINE_path(target_trace_file, "", "Specifies the trace file to load.", "GPU");
 DEFINE_path(trace_dump_path, "", "Output path for dumped files.", "GPU");

src/xenia/gpu/trace_viewer.cc

@@ -1763,8 +1763,8 @@ void TraceViewer::DrawStateUI() {
             regs.GetVertexFetch(vertex_binding.fetch_constant);
         assert_true(fetch.endian == xenos::Endian::k8in32);
         char tree_root_id[32];
-        sprintf(tree_root_id, "#vertices_root_%d",
-                vertex_binding.fetch_constant);
+        snprintf(tree_root_id, sizeof(tree_root_id), "#vertices_root_%d",
+                 vertex_binding.fetch_constant);
         if (ImGui::TreeNode(tree_root_id, "vf%d: 0x%.8X (%db), %s",
                             vertex_binding.fetch_constant, fetch.address << 2,
                             fetch.size * 4,