ICU-4281 Reduce utrace dependencies when disabled.

X-SVN-Rev: 16937

icu4c/source/common/uinit.c

@@ -70,7 +70,9 @@ u_cleanup(void)
     cmemory_cleanup();       /* undo any heap functions set by u_setMemoryFunctions(). */
     gICUInitialized = FALSE;
     UTRACE_EXIT();           /* Must be before utrace_cleanup(), which turns off tracing. */
+#if U_ENABLE_TRACING
     utrace_cleanup();
+#endif
 }
 
 /*