[ASTImporter] Import fix of GCCAsmStmts w/ missing symbolic operands

Patch by Zoltan Gera!

Differential Revision: https://reviews.llvm.org/D30831

llvm-svn: 297627
diff --git a/clang/test/ASTMerge/asm/test.cpp b/clang/test/ASTMerge/asm/test.cpp
index 3a0a205..8c3bdfe 100644
--- a/clang/test/ASTMerge/asm/test.cpp
+++ b/clang/test/ASTMerge/asm/test.cpp
@@ -4,4 +4,5 @@
 
 void testAsmImport() {
   asmFunc(12, 42);
+  asmFunc2(42);
 }