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-rw-r--r--src/runtime/c/pgf/graphviz.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/runtime/c/pgf/graphviz.c b/src/runtime/c/pgf/graphviz.c
index 5bf270003..11ecabe40 100644
--- a/src/runtime/c/pgf/graphviz.c
+++ b/src/runtime/c/pgf/graphviz.c
@@ -131,7 +131,7 @@ pgf_bracket_lzn_expr_literal(PgfLinFuncs** funcs, PgfLiteral lit)
{
PgfBracketLznState* state = gu_container(funcs, PgfBracketLznState, funcs);
- GuString label;
+ GuString label = NULL;
GuVariantInfo i = gu_variant_open(lit);
switch (i.tag) {