Fixing some exception message typos in webaudio/AnalyzerNode

LayoutTests/webaudio/dom-exceptions-expected.txt

Index: LayoutTests/webaudio/dom-exceptions-expected.txt
diff --git a/LayoutTests/webaudio/dom-exceptions-expected.txt b/LayoutTests/webaudio/dom-exceptions-expected.txt
index 299ea32dbac59ef4d30c437e0b6f78941e5c4a01..047bad4c617fba1cb39f2031ac5087c00811a011 100644
--- a/LayoutTests/webaudio/dom-exceptions-expected.txt
+++ b/LayoutTests/webaudio/dom-exceptions-expected.txt
@@ -23,9 +23,9 @@ PASS context.createPeriodicWave(null, null) threw exception SyntaxError: Failed
 PASS context.createPeriodicWave(new Float32Array(10), null) threw exception SyntaxError: Failed to execute 'createPeriodicWave' on 'AudioContext': invalid imaginary array.
 PASS context.createPeriodicWave(new Float32Array(4100), new Float32Array(4100)) threw exception IndexSizeError: Failed to execute 'createPeriodicWave' on 'AudioContext': length of real array (4100) exceeds allowed maximum of 4096.
 PASS context.createPeriodicWave(new Float32Array(10), new Float32Array(7)) threw exception IndexSizeError: Failed to execute 'createPeriodicWave' on 'AudioContext': length of real array (10) and length of imaginary array (7) must match..
-PASS node.fftSize = 42 threw exception IndexSizeError: Failed to set the 'fftSize' property on 'AnalyserNode': The value provided (42 is not a power of two..
-PASS node.fftSize = 16 threw exception IndexSizeError: Failed to set the 'fftSize' property on 'AnalyserNode': The FTT size provided (16) is outside the range [32, 2048]..
-PASS node.fftSize = 4096 threw exception IndexSizeError: Failed to set the 'fftSize' property on 'AnalyserNode': The FTT size provided (4096) is outside the range [32, 2048]..
+PASS node.fftSize = 42 threw exception IndexSizeError: Failed to set the 'fftSize' property on 'AnalyserNode': The value provided (42) is not a power of two..
+PASS node.fftSize = 16 threw exception IndexSizeError: Failed to set the 'fftSize' property on 'AnalyserNode': The FFT size provided (16) is outside the range [32, 2048]..
+PASS node.fftSize = 4096 threw exception IndexSizeError: Failed to set the 'fftSize' property on 'AnalyserNode': The FFT size provided (4096) is outside the range [32, 2048]..
 PASS node.minDecibels = -10 threw exception IndexSizeError: Failed to set the 'minDecibels' property on 'AnalyserNode': The minDecibels provided (-10) is greater than the maximum bound (-30)..
 PASS node.maxDecibels = -150 threw exception IndexSizeError: Failed to set the 'maxDecibels' property on 'AnalyserNode': The maxDecibels provided (-150) is less than the minimum bound (-100)..
 PASS node.smoothingTimeConstant = -0.1 threw exception IndexSizeError: Failed to set the 'smoothingTimeConstant' property on 'AnalyserNode': The smoothing value provided (-0.1) is outside the range [0, 1]..