Fix typo in variable name.

Bug: 132357300
Test: m nothing
Change-Id: I0e770aa7ab179aa90ae0d12d7c101e65ca345bee
diff --git a/core/dex_preopt_odex_install.mk b/core/dex_preopt_odex_install.mk
index add3c45..084b302 100644
--- a/core/dex_preopt_odex_install.mk
+++ b/core/dex_preopt_odex_install.mk
@@ -209,7 +209,7 @@
       $(my_dexpreopt_libs_compat_29) \
       $(my_dexpreopt_libs_compat_30)
   else
-    my_extra_dexpreopt_libs :=
+    my_dexpreopt_libs_compat :=
   endif
 
   my_dexpreopt_libs := $(sort \