remove ScreenInfo typedef and move Area into screen.h

config.h

@@ -51,16 +51,6 @@ struct Rule
 
 typedef struct AwesomeConf AwesomeConf;
 
-typedef struct Area Area;
-struct Area
-{
-    /* Co-ords of upper left corner */
-    int x;
-    int y;
-    int width;
-    int height;
-};
-
 typedef struct Layout Layout;
 struct Layout
 {

screen.c

@@ -38,7 +38,7 @@ Area
 get_screen_area(int screen, Statusbar *statusbar, Padding *padding)
 {
     int screen_number = 0;
-    ScreenInfo *si;
+    XineramaScreenInfo *si;
     Area area;
 
     if(XineramaIsActive(globalconf.display)){

screen.h

@@ -26,7 +26,14 @@
 
 #include <X11/extensions/Xinerama.h>
 
-typedef XineramaScreenInfo ScreenInfo;
+typedef struct
+{
+    /* Co-ords of upper left corner */
+    int x;
+    int y;
+    int width;
+    int height;
+} Area;
 
 Area get_screen_area(int, Statusbar *, Padding *);
 Area get_display_area(int, Statusbar *, Padding *);