[beast: 28/29] TOOLS: fix Bse::error checks

[Tim Janik <timj src gnome org>]

commit b1d4e69d53c84c39fc1f77a34f6f58e35f51c25e
Author: Tim Janik <timj gnu org>
Date:   Mon Mar 7 01:56:48 2016 +0100

    TOOLS: fix Bse::error checks
    
    Signed-off-by: Tim Janik <timj gnu org>

 tools/bsewavetool.cc |    4 ++--
 tools/bwtwave.cc     |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/tools/bsewavetool.cc b/tools/bsewavetool.cc
index da6fe7a..d1bd76d 100644
--- a/tools/bsewavetool.cc
+++ b/tools/bsewavetool.cc
@@ -162,7 +162,7 @@ main (int   argc,
           bse_wave_file_info_unref (winfo);
         }
     }
-  if (!wave && !error)
+  if (!wave && error == 0)
     error = Bse::Error::IO;       /* unknown */
   if (error != 0)
     {
@@ -2549,7 +2549,7 @@ public:
            GslDataHandle *fir_handle = create_fir_handle (dhandle);
 
            Bse::Error error = print_effective_stopband_start (fir_handle);
-           if (!error)
+           if (error == 0)
              error = chunk->change_dhandle (fir_handle, 0, 0);
 
            if (error != 0)
diff --git a/tools/bwtwave.cc b/tools/bwtwave.cc
index 50d6311..1fb4b84 100644
--- a/tools/bwtwave.cc
+++ b/tools/bwtwave.cc
@@ -57,7 +57,7 @@ WaveChunk::change_dhandle (GslDataHandle *xhandle,
     }
   Bse::Error error = gsl_data_handle_open (xhandle);
   gsl_data_handle_unref (xhandle);
-  if (!error)
+  if (error == 0)
     {
       if (dhandle)
         gsl_data_handle_close (dhandle);
@@ -123,7 +123,7 @@ Wave::add_chunk (GslDataHandle  *dhandle,
     gsl_data_handle_ref (dhandle);
 
   Bse::Error error = gsl_data_handle_open (dhandle);
-  if (!error)
+  if (error == 0)
     {
       WaveChunk wc;
       wc.dhandle = dhandle;