2 trivial doc warnings on trunk.

[Suresh Thalamati]

[javadoc] 
C:\nightlies\main\src\opensource\java\engine\org\apache\derby\impl\jdbc\LOBStreamControl.java:303: 
warning - @param argument "b" is not a parameter name.
      [javadoc] 
C:\nightlies\main\src\opensource\java\engine\org\apache\derby\impl\jdbc\LOBStreamControl.java:372: 
warning - @param argument "pos" is not a parameter name.
      [javadoc] 2 warnings

Thanks
-suresh