util/StringUtil: rename strchug_fast() to StripLeft()

src/playlist/cue/CueParser.cxx

@@ -80,7 +80,7 @@ cue_next_quoted(char *p, char **pp)
 static const char *
 cue_next_token(char **pp)
 {
-	char *p = strchug_fast(*pp);
+	char *p = StripLeft(*pp);
 	if (*p == 0)
 		return nullptr;
 
@@ -90,7 +90,7 @@ cue_next_token(char **pp)
 static const char *
 cue_next_value(char **pp)
 {
-	char *p = strchug_fast(*pp);
+	char *p = StripLeft(*pp);
 	if (*p == 0)
 		return nullptr;
 

src/playlist/plugins/ExtM3uPlaylistPlugin.cxx

@@ -82,7 +82,7 @@ extm3u_parse_tag(const char *line)
 		/* 0 means unknown duration */
 		duration = 0;
 
-	name = strchug_fast(endptr + 1);
+	name = StripLeft(endptr + 1);
 	if (*name == 0 && duration == 0)
 		/* no information available; don't allocate a tag
 		   object */
@@ -116,7 +116,7 @@ ExtM3uPlaylist::NextSong()
 			continue;
 		}
 
-		line_s = strchug_fast(line_s);
+		line_s = StripLeft(line_s);
 	} while (line_s[0] == '#' || *line_s == 0);
 
 	return new DetachedSong(line_s, std::move(tag));

src/playlist/plugins/M3uPlaylistPlugin.cxx

@@ -52,7 +52,7 @@ M3uPlaylist::NextSong()
 		if (line_s == nullptr)
 			return nullptr;
 
-		line_s = strchug_fast(line_s);
+		line_s = StripLeft(line_s);
 	} while (line_s[0] == '#' || *line_s == 0);
 
 	return new DetachedSong(line_s);