AAPT2: Fix typo in Config parsing

The 'any' syntax of a configuration is rarely used so this has not been
an issue in the field.

Test: none
Change-Id: Icb9cb2d5ad061e3ea1c43dc1cd7ca2f222965cdc
diff --git a/tools/aapt2/ConfigDescription.cpp b/tools/aapt2/ConfigDescription.cpp
index 7ff0c72..6a099651 100644
--- a/tools/aapt2/ConfigDescription.cpp
+++ b/tools/aapt2/ConfigDescription.cpp
@@ -70,7 +70,7 @@
 
 static bool parseMnc(const char* name, ResTable_config* out) {
   if (strcmp(name, kWildcardName) == 0) {
-    if (out) out->mcc = 0;
+    if (out) out->mnc = 0;
     return true;
   }
   const char* c = name;