Fix bug in findWords.

Runtime/ui/txt/paragraph.cs

                     inWord = true;
                 }
                 else if (inWord && isSpace) {
+                    inWord = false;
                     wordCount++;
                 }
             }
                     inWord = true;
                 }
                 else if (inWord && isSpace) {
+                    inWord = false;
                     words[wordCount++] = new Range<int>(wordStart, i);
                 }
             }