[Bugs] #1801 UNSP: Do not fall to infinite loop if input text doesn't include alnum symbols

[Sugar Labs Bugs]

#1801: Do not fall to infinite loop if input text doesn't include alnum symbols
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    Reporter:  alsroot                    |          Owner:  alsroot                    
        Type:  defect                     |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  gst-plugins-espeak         |        Version:  Unspecified                
    Severity:  Unspecified                |       Keywords:                             
Distribution:  Unspecified                |   Status_field:  Unconfirmed                
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Ticket URL: <http://bugs-testing.sugarlabs.org/ticket/1801>
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