Bug 1367899: Add handling for call reg opcode; r=dmajor

MozReview-Commit-ID: 2ncXsGf2H95

--HG--
extra : rebase_source : 70419541bf28844af4ce6348e343691d073556c3

xpcom/build/nsWindowsDllInterceptor.h

@@ -1198,6 +1198,9 @@ protected:
           JumpPatch jump(nTrampBytes, jmpDest, JumpType::Jmp);
           nTrampBytes = jump.GenerateJump(tramp);
           nOrigBytes += 6;
+        } else if ((origBytes[nOrigBytes + 1] & (kMaskMod|kMaskReg)) == BuildModRmByte(kModReg, 2, 0)) {
+          // CALL reg (ff nn)
+          COPY_CODES(2);
         } else {
           MOZ_ASSERT_UNREACHABLE("Unrecognized opcode sequence");
           return;