setupapi: Make sure the class name is always set on success in SetupDiGetINFClassW (Valgrind).

Signed-off-by: Sven Baars <sbaars@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

setupapi: Make sure the class name is always set on success in SetupDiGetINFClassW (Valgrind).
dcc6a143 · Sven Baars · Alexandre Julliard · b0897490 · dcc6a143
Commit dcc6a143 authored Apr 17, 2020 by Sven Baars Committed by Alexandre Julliard Apr 17, 2020
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devinst.c dlls/setupapi/devinst.c +5 -1

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--- a/dlls/setupapi/devinst.c
+++ b/dlls/setupapi/devinst.c
@@ -4188,7 +4188,11 @@ BOOL WINAPI SetupDiGetINFClassW(PCWSTR inf, LPGUID class_guid, PWSTR class_name,
    have_name = 0 < dret;

    if (dret >= MAX_PATH -1) FIXME("buffer might be too small\n");
-    if (have_guid && !have_name) FIXME("class name lookup via guid not implemented\n");
+    if (have_guid && !have_name)
+    {
+        class_name[0] = '\0';
+        FIXME("class name lookup via guid not implemented\n");
+    }

    if (have_name)
    {