Changed RageBitmapTexture to pass a dialog id for the missing texture warning so it can be ignored. Updated changelog.

Docs/Changelog_sm5.txt

@@ -4,6 +4,15 @@ The StepMania 5 Changelog covers all post-sm-ssc changes. For a list of changes
 from StepMania 4 alpha 5 to sm-ssc v1.2.5, see Changelog_sm-ssc.txt.
 ________________________________________________________________________________
 
+2015/04/25
+----------
+* [General] Screenshot key now checks whether there is a current song, and
+  puts the song title and current screen name in the screenshot filename. [kyzentun]
+
+2015/04/24
+----------
+* [Gameplay] Toasty animation can now occur multiple times during gameplay. [kyzentun]
+
 2015/04/23
 ----------
 * [ServiceMenu] Entries in service menu rearranged to hopefully organize them

src/RageBitmapTexture.cpp

@@ -85,8 +85,10 @@ void RageBitmapTexture::Create()
 	/* Tolerate corrupt/unknown images. */
 	if( pImg == NULL )
 	{
-		RString sWarning = ssprintf( "RageBitmapTexture: Couldn't load %s: %s", actualID.filename.c_str(), error.c_str() );
-		Dialog::OK( sWarning );
+		RString warning = ssprintf("RageBitmapTexture: Couldn't load %s: %s",
+			actualID.filename.c_str(), error.c_str());
+		LOG->Warn(warning);
+		Dialog::OK(warning, "missing_texture");
 		pImg = RageSurfaceUtils::MakeDummySurface( 64, 64 );
 		ASSERT( pImg != NULL );
 	}