lavfi/vf_frei0: add missing new line to some error messages

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavfilter/vf_frei0r.c

@@ -256,7 +256,7 @@ static av_cold int frei0r_init(AVFilterContext *ctx,
         return AVERROR(EINVAL);
 
     if (f0r_init() < 0) {
-        av_log(ctx, AV_LOG_ERROR, "Could not init the frei0r module");
+        av_log(ctx, AV_LOG_ERROR, "Could not init the frei0r module\n");
         return AVERROR(EINVAL);
     }
 
@@ -316,7 +316,7 @@ static int config_input_props(AVFilterLink *inlink)
     Frei0rContext *frei0r = ctx->priv;
 
     if (!(frei0r->instance = frei0r->construct(inlink->w, inlink->h))) {
-        av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance");
+        av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance\n");
         return AVERROR(EINVAL);
     }
 
@@ -433,7 +433,7 @@ static int source_config_props(AVFilterLink *outlink)
     outlink->sample_aspect_ratio = (AVRational){1,1};
 
     if (!(frei0r->instance = frei0r->construct(outlink->w, outlink->h))) {
-        av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance");
+        av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance\n");
         return AVERROR(EINVAL);
     }