patch 8.0.1550: various small problems in source files

Problem:    Various small problems in source files.
Solution:   Fix the problems.
diff --git a/src/json_test.c b/src/json_test.c
index c7779b2..47bec8e 100644
--- a/src/json_test.c
+++ b/src/json_test.c
@@ -162,7 +162,7 @@
     reader.js_fill = fill_from_cookie;
     reader.js_used = 0;
     reader.js_buf = (char_u *)"  [  \"a\"  ,  123  ";
-    reader.js_cookie =        "  [  \"a\"  ,  123  ]  ";
+    reader.js_cookie =	      "  [  \"a\"  ,  123  ]  ";
     assert(json_find_end(&reader, 0) == OK);
     reader.js_buf = (char_u *)"  [  \"a\"  ,  ";
     assert(json_find_end(&reader, 0) == OK);
@@ -186,7 +186,7 @@
     reader.js_used = 0;
     reader.js_buf = (char_u *)" \"foo";
     reader.js_end = reader.js_buf + STRLEN(reader.js_buf);
-    reader.js_cookie =        " \"foobar\"  ";
+    reader.js_cookie =	      " \"foobar\"  ";
     assert(json_decode_string(&reader, NULL, '"') == OK);
 }
 #endif