Don't fail to load runtime if running LLI from the current directory


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1044 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ExecutionEngine/Interpreter/UserInput.cpp b/lib/ExecutionEngine/Interpreter/UserInput.cpp
index 97bba9c..49fd5e4 100644
--- a/lib/ExecutionEngine/Interpreter/UserInput.cpp
+++ b/lib/ExecutionEngine/Interpreter/UserInput.cpp
@@ -154,7 +154,10 @@
     return;
   }
 
-  string RuntimeLib = getCurrentExecutablePath() + "/RuntimeLib.bc";
+  string RuntimeLib = getCurrentExecutablePath();
+  if (!RuntimeLib.empty()) RuntimeLib += "/";
+  RuntimeLib += "RuntimeLib.bc";
+
   if (Module *SupportLib = ParseBytecodeFile(RuntimeLib, &ErrorMsg)) {
     if (LinkModules(CurMod, SupportLib, &ErrorMsg))
       cerr << "Error Linking runtime library into current module: "