Append newline to EOF for .txt test data files

Reverts and fixes 102f0d3

compiler/testData/diagnostics/tests/inference/reportingImprovements/ErrorTypeAsGenericParameter.txt

@@ -3,4 +3,4 @@ package
 package a {
     internal fun </*0*/ T, /*1*/ R, /*2*/ S> foo(/*0*/ block: (T) -> R, /*1*/ second: (T) -> S): (T) -> R
     internal fun main(/*0*/ args: kotlin.Array<kotlin.String>): kotlin.Unit
-}
+}

compiler/testData/diagnostics/tests/inference/reportingImprovements/FunctionPlaceholder.txt

@@ -11,4 +11,4 @@ package a {
         public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
         public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
     }
-}
+}

compiler/testData/diagnostics/tests/inference/reportingImprovements/NoAmbiguityForDifferentFunctionTypes.txt

@@ -17,4 +17,4 @@ package a {
         public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
         public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
     }
-}
+}

compiler/testData/diagnostics/tests/inference/reportingImprovements/cannotInferParameterTypeWithInference.txt

@@ -5,4 +5,4 @@ package aa {
     internal fun </*0*/ T, /*1*/ R> foo(/*0*/ block: (T) -> R): (T) -> R
     internal fun test1(): kotlin.Unit
     internal fun test2(): kotlin.Unit
-}
+}

compiler/testData/diagnostics/tests/inference/reportingImprovements/subtypeForInvariantWithErrorGenerics.txt

@@ -5,4 +5,4 @@ package a {
     internal fun </*0*/ R> bar(/*0*/ r: kotlin.MutableList<R>, /*1*/ f: () -> R): kotlin.Boolean
     internal fun </*0*/ R> foo(/*0*/ f: () -> R, /*1*/ r: kotlin.MutableList<R>): kotlin.Boolean
     internal fun test(): kotlin.Unit
-}
+}