Should have been cleaned in 39dfc51.

src/Compiler-IR.js

@@ -5448,7 +5448,7 @@ return self;
 },
 //>>excludeStart("ide", pragmas.excludeIdeData);
 args: ["aBlock"],
-source: "nextPutSequenceWith: aBlock\x0a\x09\x22stream\x0a\x09\x09nextPutAll: 'switch($core.thisContext.pc){'; lf.\x22\x0a\x09aBlock value.\x0a\x09\x22stream\x0a\x09\x09nextPutAll: '};'; lf\x22",
+source: "nextPutSequenceWith: aBlock\x0a\x09aBlock value",
 referencedClasses: [],
 //>>excludeEnd("ide");
 messageSends: ["value"]

src/Compiler-IR.st

@@ -1239,11 +1239,7 @@ nextPutSendIndexFor: anIRSend
 !
 
 nextPutSequenceWith: aBlock
-	"stream
-		nextPutAll: 'switch($core.thisContext.pc){'; lf."
-	aBlock value.
-	"stream
-		nextPutAll: '};'; lf"
+	aBlock value
 !
 
 nextPutStatementWith: aBlock