[PATCH] x86/platform: correct #undef in compat checking

[Jan Beulich]

A stray 'p' was there, rendering the #undef ineffectual.

Signed-off-by: Jan Beulich <jbeul...@suse.com>

--- a/xen/arch/x86/x86_64/platform_hypercall.c
+++ b/xen/arch/x86/x86_64/platform_hypercall.c
@@ -30,7 +30,7 @@ CHECK_pf_pcpu_version;
 
 #define xen_pf_ucode_revision xenpf_ucode_revision
 CHECK_pf_ucode_revision;
-#undef xen_pf_pucode_revision
+#undef xen_pf_ucode_revision
 
 #define xen_pf_enter_acpi_sleep xenpf_enter_acpi_sleep
 CHECK_pf_enter_acpi_sleep;