xmlparse.c: Address warning about unused functions (#161)

expat/Changes

@@ -30,6 +30,7 @@ Release 2.2.5 ???????????????????
               #6  Resolve superfluous internal malloc/realloc switch
        #153 #155  Improve docbook2x-man detection
             #160  Undefine NDEBUG in the test suite (rather than rejecting it)
+            #161  Address compiler warnings
 
         Special thanks to:
             Benbuck Nason

expat/lib/xmlparse.c

@@ -673,6 +673,9 @@ static const XML_Char implicitContext[] = {
 };
 
 
+/* To avoid warnings about unused functions: */
+#if ! defined(HAVE_ARC4RANDOM_BUF) && ! defined(HAVE_ARC4RANDOM)
+
 #if defined(HAVE_GETRANDOM) || defined(HAVE_SYSCALL_GETRANDOM)
 
 /* Obtain entropy on Linux 3.17+ */
@@ -738,6 +741,8 @@ writeRandomBytes_dev_urandom(void * target, size_t count) {
 
 #endif  /* ! defined(_WIN32) && defined(XML_DEV_URANDOM) */
 
+#endif  /* ! defined(HAVE_ARC4RANDOM_BUF) && ! defined(HAVE_ARC4RANDOM) */
+
 
 #if defined(HAVE_ARC4RANDOM)