native frameworks: 64-bit compile issues

- Fix format (print/scanf)
- Suppress unused argument warning messages (bonus)

Change-Id: I05c7724d2aba6da1e82a86000e11f3a8fef4e728
diff --git a/opengl/libs/GLES_trace/src/gltrace_egl.cpp b/opengl/libs/GLES_trace/src/gltrace_egl.cpp
index 9d1682a..4f9b006 100644
--- a/opengl/libs/GLES_trace/src/gltrace_egl.cpp
+++ b/opengl/libs/GLES_trace/src/gltrace_egl.cpp
@@ -71,7 +71,7 @@
     glContext->traceGLMessage(&glmessage);
 }
 
-void GLTrace_eglSwapBuffers(void *dpy, void *draw) {
+void GLTrace_eglSwapBuffers(void* /*dpy*/, void* /*draw*/) {
     GLMessage glmessage;
     GLTraceContext *glContext = getGLTraceContext();