TextFile: don't include glib.h in header

src/TextFile.cxx

@@ -19,10 +19,26 @@
 
 #include "config.h"
 #include "TextFile.hxx"
+#include "fs/Path.hxx"
+#include "fs/FileSystem.hxx"
+
+#include <glib.h>
 
 #include <assert.h>
 #include <string.h>
 
+TextFile::TextFile(const Path &path_fs)
+	:file(FOpen(path_fs, FOpenMode::ReadText)),
+	 buffer(g_string_sized_new(step)) {}
+
+TextFile::~TextFile()
+{
+	if (file != nullptr)
+		fclose(file);
+
+	g_string_free(buffer, true);
+}
+
 char *
 TextFile::ReadLine()
 {

src/TextFile.hxx

@@ -21,10 +21,11 @@
 #define MPD_TEXT_FILE_HXX
 
 #include "gcc.h"
-#include "fs/Path.hxx"
-#include "fs/FileSystem.hxx"
 
-#include <glib.h>
+#include <stdio.h>
+
+class Path;
+typedef struct _GString GString;
 
 class TextFile {
 	static constexpr size_t max_length = 512 * 1024;
@@ -35,18 +36,11 @@ class TextFile {
 	GString *const buffer;
 
 public:
-	TextFile(const Path &path_fs)
-		:file(FOpen(path_fs, FOpenMode::ReadText)),
-		 buffer(g_string_sized_new(step)) {}
+	TextFile(const Path &path_fs);
 
 	TextFile(const TextFile &other) = delete;
 
-	~TextFile() {
-		if (file != nullptr)
-			fclose(file);
-
-		g_string_free(buffer, true);
-	}
+	~TextFile();
 
 	bool HasFailed() const {
 		return gcc_unlikely(file == nullptr);