[Fix] [Fortran Support] Fix variable name & make testcase activate on release

There was:
    #ifdef NDEBUG

This should be:
    #ifndef NDEBUG

Also, the variable name was incorrect. Fixed the variable name.

llvm-svn: 302696
diff --git a/polly/lib/Analysis/ScopInfo.cpp b/polly/lib/Analysis/ScopInfo.cpp
index 30870db..bfc27a6 100644
--- a/polly/lib/Analysis/ScopInfo.cpp
+++ b/polly/lib/Analysis/ScopInfo.cpp
@@ -1039,8 +1039,8 @@
 
 // TODO: write checks to make sure it looks _exactly_ like a Fortran array
 // descriptor
-#ifdef NDEBUG
-  StructType *ty = dyn_cast<StructType>(Descriptor->getValueType());
+#ifndef NDEBUG
+  StructType *ty = dyn_cast<StructType>(FAD->getValueType());
   assert(ty && "expected value of type Fortran array descriptor");
   assert(ty->hasName() && ty->getName().startswith("struct.array") &&
          "expected global to follow Fortran array descriptor type naming "