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-rw-r--r--modules/spanningtree/utils.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/modules/spanningtree/utils.cpp b/modules/spanningtree/utils.cpp
index 66d5d3444..45ea78c79 100644
--- a/modules/spanningtree/utils.cpp
+++ b/modules/spanningtree/utils.cpp
@@ -409,7 +409,9 @@ std::string SpanningTreeUtilities::BuildLinkString(Module* mod)
if (iter != data.begin())
buffer << '&';
- buffer << iter->first << '=' << Percent::Encode(iter->second);
+ buffer << iter->first;
+ if (!iter->second.empty())
+ buffer << '=' << Percent::Encode(iter->second);
}
return buffer.str();
}