fix character handling in params

[DvirDukhan]

No description provided.

[gkorland]

@DvirDukhan which scenario does it fix? can you add a test?

[DvirDukhan]

@gkorland
I found it by accident when debugged something.
Added test

[codecov]

Codecov Report

Merging #84 into master will increase coverage by 0.25%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master      #84      +/-   ##
============================================
+ Coverage     78.67%   78.92%   +0.25%     
- Complexity      187      188       +1     
============================================
  Files            23       23              
  Lines           558      560       +2     
  Branches         61       62       +1     
============================================
+ Hits            439      442       +3     
+ Misses           93       92       -1     
  Partials         26       26              

Impacted Files	Coverage Δ	Complexity Δ
...main/java/com/redislabs/redisgraph/impl/Utils.java	93.75% <100.00%> (+0.20%)	20.00 <0.00> (+1.00)
...abs/redisgraph/impl/api/RedisGraphTransaction.java	79.16% <0.00%> (+4.16%)	7.00% <0.00%> (ø%)

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