Eeschema: Fix off-by-one in saving bitmaps

common/class_bitmap_base.cpp

@@ -107,9 +107,8 @@ bool BITMAP_BASE::SaveData( FILE* aFile ) const
         // Write binary data in hexadecimal form (ASCII)
         wxStreamBuffer* buffer = stream.GetOutputStreamBuffer();
         char*           begin  = (char*) buffer->GetBufferStart();
-        int             ii;
 
-        for( ii = 0; begin <= buffer->GetBufferEnd(); begin++, ii++ )
+        for( int ii = 0; begin < buffer->GetBufferEnd(); begin++, ii++ )
         {
             if( ii >= 32 )
             {
@@ -140,7 +139,7 @@ void BITMAP_BASE::SaveData( wxArrayString& aPngStrings ) const
         char*           begin  = (char*) buffer->GetBufferStart();
         wxString        line;
 
-        for( int ii = 0; begin <= buffer->GetBufferEnd(); begin++, ii++ )
+        for( int ii = 0; begin < buffer->GetBufferEnd(); begin++, ii++ )
         {
             if( ii >= 32 )
             {

eeschema/sch_legacy_plugin.cpp

@@ -1707,7 +1707,7 @@ void SCH_LEGACY_PLUGIN::saveBitmap( SCH_BITMAP* aBitmap )
     wxStreamBuffer* buffer = stream.GetOutputStreamBuffer();
     char*           begin  = (char*) buffer->GetBufferStart();
 
-    for( int ii = 0; begin <= buffer->GetBufferEnd(); begin++, ii++ )
+    for( int ii = 0; begin < buffer->GetBufferEnd(); begin++, ii++ )
     {
         if( ii >= 32 )
         {