runtime: mark non-x86 aeshashbody parameters as unused

    
    Avoids warnings during the build.
    
    Reviewed-on: https://go-review.googlesource.com/34142

From-SVN: r243459

gcc/go/gofrontend/MERGE

-78e3527fcaf4ffd33b22e39a56e5d076844302be
+ac59bb383e1b446c68465af793722dd0e84abefb
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.

libgo/runtime/aeshash.c

@@ -575,7 +575,10 @@ uintptr aeshashbody(void* p, uintptr seed, uintptr size, Slice aeskeysched) {
 
 #else // !defined(__i386__) && !defined(__x86_64__)
 
-uintptr aeshashbody(void* p, uintptr seed, uintptr size, Slice aeskeysched) {
+uintptr aeshashbody(void* p __attribute__((unused)),
+		    uintptr seed __attribute__((unused)),
+		    uintptr size __attribute__((unused)),
+		    Slice aeskeysched __attribute__((unused))) {
 	// We should never get here on a non-x86 system.
 	runtime_throw("impossible call to aeshashbody");
 }