Index: lldb/tools/lldb-vscode/lldb-vscode.cpp
===================================================================
--- lldb/tools/lldb-vscode/lldb-vscode.cpp
+++ lldb/tools/lldb-vscode/lldb-vscode.cpp
@@ -435,7 +435,7 @@
       }
       auto mapFrom = GetAsString((*mapping)[0]);
       auto mapTo = GetAsString((*mapping)[1]);
-      strm << "\"" << mapFrom << "\" \"" << mapTo << "\"";
+      strm << "\"" << mapFrom << "\" \"" << mapTo << "\" ";
     }
   } else {
     if (ObjectContainsKey(arguments, "sourceMap")) {
@@ -2581,7 +2581,7 @@
 #undef REQUEST_CALLBACK
   return g_request_handlers;
 }
-  
+
 } // anonymous namespace
 
 int main(int argc, char *argv[]) {