dswave: Indirection level fix

[Andrew Talbot]

Changelog:
    dswave: Indirection level fix.

diff --git a/dlls/dswave/dswave_main.c b/dlls/dswave/dswave_main.c
index c60a813..a66f1be 100644
--- a/dlls/dswave/dswave_main.c
+++ b/dlls/dswave/dswave_main.c
@@ -328,7 +328,7 @@ const char *debugstr_dmguid (const GUID
         if (!id) return "(null)";
 
 	for (i = 0; i < sizeof(guids)/sizeof(guids[0]); i++) {
-		if (IsEqualGUID(id, &guids[i].guid))
+		if (IsEqualGUID(id, guids[i].guid))
 			return guids[i].name;
 	}
 	/* if we didn't find it, act like standard debugstr_guid */