app-layer: ApplyTxConfigFn does not return bool

It does not return anything.
The only known implementation is in dns where it does not return.
And the C code does not bother to check a return value anyways.

src/app-layer-parser.c

@@ -102,7 +102,7 @@ typedef struct AppLayerParserProtoCtx_
 
     AppLayerStateData *(*GetStateData)(void *state);
     AppLayerTxData *(*GetTxData)(void *tx);
-    bool (*ApplyTxConfig)(void *state, void *tx, int mode, AppLayerTxConfig);
+    void (*ApplyTxConfig)(void *state, void *tx, int mode, AppLayerTxConfig);
 
     void (*SetStreamDepthFlag)(void *tx, uint8_t flags);
 
@@ -610,7 +610,7 @@ void AppLayerParserRegisterStateDataFunc(
 }
 
 void AppLayerParserRegisterApplyTxConfigFunc(uint8_t ipproto, AppProto alproto,
-        bool (*ApplyTxConfig)(void *state, void *tx, int mode, AppLayerTxConfig))
+        void (*ApplyTxConfig)(void *state, void *tx, int mode, AppLayerTxConfig))
 {
     SCEnter();
 

src/app-layer-parser.h

@@ -215,7 +215,7 @@ void AppLayerParserRegisterGetStateFuncs(uint8_t ipproto, AppProto alproto,
 void AppLayerParserRegisterTxDataFunc(uint8_t ipproto, AppProto alproto,
         AppLayerTxData *(*GetTxData)(void *tx));
 void AppLayerParserRegisterApplyTxConfigFunc(uint8_t ipproto, AppProto alproto,
-        bool (*ApplyTxConfig)(void *state, void *tx, int mode, AppLayerTxConfig));
+        void (*ApplyTxConfig)(void *state, void *tx, int mode, AppLayerTxConfig));
 void AppLayerParserRegisterStateDataFunc(
         uint8_t ipproto, AppProto alproto, AppLayerStateData *(*GetStateData)(void *state));
 

src/app-layer-register.h

@@ -67,7 +67,7 @@ typedef struct AppLayerParser {
 
     AppLayerStateData *(*GetStateData)(void *state);
     AppLayerTxData *(*GetTxData)(void *tx);
-    bool (*ApplyTxConfig)(void *state, void *tx, int mode, AppLayerTxConfig);
+    void (*ApplyTxConfig)(void *state, void *tx, int mode, AppLayerTxConfig);
 
     uint32_t flags;