Fix spelling in comments (intruction -> instruction)

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
diff --git a/bsd-user/main.c b/bsd-user/main.c
index 6b12f8b..0c3fca1 100644
--- a/bsd-user/main.c
+++ b/bsd-user/main.c
@@ -237,7 +237,7 @@
             break;
 #ifndef TARGET_ABI32
         case EXCP_SYSCALL:
-            /* syscall from syscall intruction */
+            /* syscall from syscall instruction */
             if (bsd_type == target_freebsd)
                 env->regs[R_EAX] = do_freebsd_syscall(env,
                                                       env->regs[R_EAX],