Improve help output from llvm-db 'info' command.  Patch contributed by
Michael McCracken!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17241 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-db/Commands.cpp b/tools/llvm-db/Commands.cpp
index 6df2f69..8e3125e 100644
--- a/tools/llvm-db/Commands.cpp
+++ b/tools/llvm-db/Commands.cpp
@@ -505,8 +505,11 @@
 void CLIDebugger::infoCommand(std::string &Options) {
   std::string What = getToken(Options);
 
-  if (What.empty() || !getToken(Options).empty())
-    throw "info command expects exactly one argument.";
+  if (What.empty() || !getToken(Options).empty()){
+    std::string infoStr("info");
+    helpCommand(infoStr);
+    return;
+  }
 
   if (What == "frame") {
   } else if (What == "functions") {