🤦 moment as the previous merge of master was faulty.

davisonja · davisonja · commit 0692c6118e3e · 2019-11-20T18:15:26.000+13:00
diff --git a/cores/esp8266/Updater.cpp b/cores/esp8266/Updater.cpp
@@ -23,6 +23,7 @@ extern "C" {
 }
 
 extern "C" uint32_t _FS_start;
+extern "C" uint32_t _FS_end;
 extern "C" uint32_t _SKETCH_AREA_end;
 
 

Original file line number	Diff line number	Diff line change
`@@ -23,6 +23,7 @@ extern "C" {`
`23`	`23`	`}`
`24`	`24`
`25`	`25`	`extern "C" uint32_t _FS_start;`
	`26`	`+extern "C" uint32_t _FS_end;`
`26`	`27`	`extern "C" uint32_t _SKETCH_AREA_end;`
`27`	`28`
`28`	`29`