Check --xposedversion before setting ADDR_COMPAT_LAYOUT

Otherwise this parameter might not work if the file is not stored
as /system/bin/app_process. This also means that we trust ourself
not to do those bad things which the workaround is needed for.

app_main.cpp

@@ -145,6 +145,11 @@ static void setArgv0(const char *argv0, const char *newArgv0)
 
 int main(int argc, char* const argv[])
 {
+    if (argc == 2 && strcmp(argv[1], "--xposedversion") == 0) {
+        printf("Xposed version: " XPOSED_VERSION "\n");
+        return 0;
+    }
+
 #if PLATFORM_SDK_VERSION >= 18
 #ifdef __arm__
     /*
@@ -174,11 +179,6 @@ int main(int argc, char* const argv[])
 #endif
 #endif
 
-    if (argc == 2 && strcmp(argv[1], "--xposedversion") == 0) {
-        printf("Xposed version: " XPOSED_VERSION "\n");
-        return 0;
-    }
-
     // These are global variables in ProcessState.cpp
     mArgC = argc;
     mArgV = argv;