[FIR-TEST] Add new testdata generated after changes in previous commit

compiler/testData/diagnostics/tests/controlFlowAnalysis/kt1977.fir.kt

@@ -0,0 +1,51 @@
+package kt1977
+
+//KT-1977 Wrong 'unused expression' in catch
+fun strToInt(s : String) : Int? =
+try {
+    Integer.parseInt(s)
+} catch(e : NumberFormatException) {
+    null
+}
+
+//more tests
+fun test1(s : String) : Int? {
+    return try {
+        88
+        Integer.parseInt(s)
+        22
+    }
+    catch (e: NumberFormatException) {
+        44
+    }
+    finally {
+        22
+    }
+}
+
+fun test2(s : String) : Int? {
+    return try {
+        88
+        Integer.parseInt(s)
+        22
+    } finally {
+            {
+            x : Int -> x
+            }
+    }
+}
+
+
+//KT-2015 False "Expression is unused" warnings
+fun foo() {
+    val i : Int = try{
+        bar()
+        1
+    }
+    catch(e : Exception){
+        0
+    }
+}
+
+fun bar() {
+}