Update UnwindRegistersRestore.S

Previously, I accidently put lw instead of ld on the mips64 code. Fixed now

Author: Jade-Marker

libunwind/src/UnwindRegistersRestore.S

@@ -1087,9 +1087,9 @@ DEFINE_LIBUNWIND_FUNCTION(_ZN9libunwind21Registers_mips_newabi6jumptoEv)
     ld $\i, (8 * \i)($4)
   .endr
   // load new pc into ra
-  lw    $31, (4 * 32)($4)
+  ld    $31, (4 * 32)($4)
   //allow for load delay, so that ra address is new value when jumping
-  lw    $30, (4 * 30)($4)
+  ld    $30, (4 * 30)($4)
   // jump to ra, load a0 in the delay slot
   jr    $31
   ld    $4, (8 * 4)($4)