Fix for LoudnessEnhancer test. Assert failing in float value.

The test was comparing (int)0 with a float, and the resulting
0.0 was failing the test. Replaced ints with floats in 2 tests.

bug: 18595319
Change-Id: I626afac691a5d93dbf52cd0e1c9c894a1c5f2908
1 file changed