Revert "[OPENMP] Allow skip expression after comma in clauses with lists."

This reverts commit http://reviews.llvm.org/rL265003. After some
thoughts decided to emit errors here.

llvm-svn: 265119
diff --git a/clang/test/OpenMP/simd_aligned_messages.cpp b/clang/test/OpenMP/simd_aligned_messages.cpp
index d1a8997..9515a0b 100644
--- a/clang/test/OpenMP/simd_aligned_messages.cpp
+++ b/clang/test/OpenMP/simd_aligned_messages.cpp
@@ -119,7 +119,7 @@
   for (I k = 0; k < argc; ++k) ++k;
   #pragma omp simd aligned (argc // expected-error {{expected ')'}} expected-note {{to match this '('}}
   for (I k = 0; k < argc; ++k) ++k;
-  #pragma omp simd aligned (argc, // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp simd aligned (argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
   for (I k = 0; k < argc; ++k) ++k;
   #pragma omp simd aligned (argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
   for (I k = 0; k < argc; ++k) ++k;
@@ -177,7 +177,7 @@
   #pragma omp simd aligned (argv // expected-error {{expected ')'}} expected-note {{to match this '('}}
   for (int k = 0; k < argc; ++k) ++k;
   // expected-error@+1 {{argument of aligned clause should be array, pointer, reference to array or reference to pointer, not 'int'}}
-  #pragma omp simd aligned (argc, // expected-error {{expected ')'}} expected-note {{to match this '('}}
+  #pragma omp simd aligned (argc, // expected-error {{expected expression}} expected-error {{expected ')'}} expected-note {{to match this '('}}
   for (int k = 0; k < argc; ++k) ++k;
   #pragma omp simd aligned (argc > 0 ? argv[1] : argv[2]) // expected-error {{expected variable name}}
   for (int k = 0; k < argc; ++k) ++k;