Merge pull request #563 from sigwinch28/fix-analyzesize-exit-code

Remove potentially undefined exit behaviour from analyzesize tool

tools/analyzesize.py

@@ -17,7 +17,7 @@ except FileNotFoundError:
 
 if len(sys.argv) < 3:
     print("Usage: analyzesize.py <info|add|diff> <datasetname>")
-    exit(-1)
+    exit(2)
 action, name = sys.argv[1:3]
 currentdata = subprocess.run(["arm-none-eabi-size","armsrc/obj/fullimage.stage1.elf"], stdout=subprocess.PIPE).stdout
 currentdata = currentdata.split(b"\n")[1].strip()