IDEA-90457 Wrapping inserts two line breaks instead of one

Correct tab-less string processing

java/java-tests/testSrc/com/intellij/psi/formatter/java/JavaFormatterInEditorTest.java

@@ -39,6 +39,7 @@ public class JavaFormatterInEditorTest extends LightPlatformCodeInsightTestCase
       "\n" +
       "class <caret>Test {\n" +
       "}",
+      
       "import static java.util.concurrent\n" +
       "        .atomic.AtomicInteger.*;\n" +
       "\n" +

platform/lang-impl/src/com/intellij/psi/impl/source/codeStyle/CodeFormatterFacade.java

@@ -342,6 +342,7 @@ public class CodeFormatterFacade {
       if (!hasTabs) {
         if (Math.min(endLineOffset, endOffsetToUse) - startLineOffset > mySettings.RIGHT_MARGIN) {
           preferredWrapPosition = startLineOffset + mySettings.RIGHT_MARGIN - FormatConstants.RESERVED_LINE_WRAP_WIDTH_IN_COLUMNS;
+          wrapLine = true;
         }
       }
       else if (canOptimize) {