Editorial: Append "then" to If-step-with-substeps

(6 occurrences from a recent commit)

This and previous commits close #452.

spec.html

@@ -28958,7 +28958,7 @@ <h1>get RegExp.prototype.global</h1>
         <emu-alg>
           1. Let _R_ be the *this* value.
           1. If Type(_R_) is not Object, throw a *TypeError* exception.
-          1. If _R_ does not have an [[OriginalFlags]] internal slot,
+          1. If _R_ does not have an [[OriginalFlags]] internal slot, then
             1. If SameValue(_R_, %RegExpPrototype%) is *true*, return *undefined*.
             1. Otherwise, throw a *TypeError* exception.
           1. Let _flags_ be the value of _R_'s [[OriginalFlags]] internal slot.
@@ -28974,7 +28974,7 @@ <h1>get RegExp.prototype.ignoreCase</h1>
         <emu-alg>
           1. Let _R_ be the *this* value.
           1. If Type(_R_) is not Object, throw a *TypeError* exception.
-          1. If _R_ does not have an [[OriginalFlags]] internal slot,
+          1. If _R_ does not have an [[OriginalFlags]] internal slot, then
             1. If SameValue(_R_, %RegExpPrototype%) is *true*, return *undefined*.
             1. Otherwise, throw a *TypeError* exception.
           1. Let _flags_ be the value of _R_'s [[OriginalFlags]] internal slot.
@@ -29027,7 +29027,7 @@ <h1>get RegExp.prototype.multiline</h1>
         <emu-alg>
           1. Let _R_ be the *this* value.
           1. If Type(_R_) is not Object, throw a *TypeError* exception.
-          1. If _R_ does not have an [[OriginalFlags]] internal slot,
+          1. If _R_ does not have an [[OriginalFlags]] internal slot, then
             1. If SameValue(_R_, %RegExpPrototype%) is *true*, return *undefined*.
             1. Otherwise, throw a *TypeError* exception.
           1. Let _flags_ be the value of _R_'s [[OriginalFlags]] internal slot.
@@ -29129,7 +29129,7 @@ <h1>get RegExp.prototype.source</h1>
         <emu-alg>
           1. Let _R_ be the *this* value.
           1. If Type(_R_) is not Object, throw a *TypeError* exception.
-          1. If _R_ does not have an [[OriginalSource]] internal slot,
+          1. If _R_ does not have an [[OriginalSource]] internal slot, then
             1. If SameValue(_R_, %RegExpPrototype%) is *true*, return `"(?:)"`.
             1. Otherwise, throw a *TypeError* exception.
           1. Assert: _R_ has an [[OriginalFlags]] internal slot.
@@ -29217,7 +29217,7 @@ <h1>get RegExp.prototype.sticky</h1>
         <emu-alg>
           1. Let _R_ be the *this* value.
           1. If Type(_R_) is not Object, throw a *TypeError* exception.
-          1. If _R_ does not have an [[OriginalFlags]] internal slot,
+          1. If _R_ does not have an [[OriginalFlags]] internal slot, then
             1. If SameValue(_R_, %RegExpPrototype%) is *true*, return *undefined*.
             1. Otherwise, throw a *TypeError* exception.
           1. Let _flags_ be the value of _R_'s [[OriginalFlags]] internal slot.
@@ -29262,7 +29262,7 @@ <h1>get RegExp.prototype.unicode</h1>
         <emu-alg>
           1. Let _R_ be the *this* value.
           1. If Type(_R_) is not Object, throw a *TypeError* exception.
-          1. If _R_ does not have an [[OriginalFlags]] internal slot,
+          1. If _R_ does not have an [[OriginalFlags]] internal slot, then
             1. If SameValue(_R_, %RegExpPrototype%) is *true*, return *undefined*.
             1. Otherwise, throw a *TypeError* exception.
           1. Let _flags_ be the value of _R_'s [[OriginalFlags]] internal slot.