Fix lli to print an error and exit when EE returns null but no string.  Patch
by Eric Rannaud!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74930 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/lli/lli.cpp b/tools/lli/lli.cpp
index a01b0d6..40b858e 100644
--- a/tools/lli/lli.cpp
+++ b/tools/lli/lli.cpp
@@ -147,8 +147,11 @@
   InitializeNativeTarget();
 
   EE = ExecutionEngine::create(MP, ForceInterpreter, &ErrorMsg, OLvl);
-  if (!EE && !ErrorMsg.empty()) {
-    std::cerr << argv[0] << ":error creating EE: " << ErrorMsg << "\n";
+  if (!EE) {
+    if (!ErrorMsg.empty())
+      std::cerr << argv[0] << ": error creating EE: " << ErrorMsg << "\n";
+    else
+      std::cerr << argv[0] << ": unknown error creating EE!\n";
     exit(1);
   }