IDEA-169556 Join Lines inserts redundant space in some cases

java/java-tests/testData/codeInsight/joinLines/ConvertComment_after.java

@@ -1,6 +1,6 @@
 class Foo {
   void f() {
-    if (ff) { /*comment*/ return null;
+    if (ff) { /*comment*/return null;
     }
   }
 }

java/java-tests/testData/codeInsight/joinLines/JoiningMethodCallWhenItDoesntFit.java

@@ -0,0 +1,4 @@
+class A {
+  <caret>String s = System
+    .getProperty("blah");
+}

java/java-tests/testData/codeInsight/joinLines/JoiningMethodCallWhenItDoesntFit_after.java

@@ -0,0 +1,3 @@
+class A {
+  String s = System.getProperty("blah");
+}

java/java-tests/testData/codeInsight/joinLines/SCR5959_after.java

@@ -1,3 +1,3 @@
 class Test {
-}<caret> // this line is mandatory
+}<caret>// this line is mandatory