Traverse multiple store-load chains for inlined lambda parameters

When a try-catch expression is passed as an argument to the inline
lambda parameter, lambda variable on stack is spilled and restored in
several different locations (1 for try-block, 1 for each catch-blocks).
So it's possible that lambda to be invoked comes from multiple loads,
all of which should have the same "root" lambda parameter.

compiler/testData/codegen/box/controlStructures/tryCatchInExpressions/kt17572_nested.kt

@@ -0,0 +1,13 @@
+fun zap(s: String) = s
+
+inline fun tryZap(string: String, fn: (String) -> String) =
+        fn(
+                try {
+                    try {
+                        zap(string)
+                    }
+                    catch (e: Exception) { "" }
+                } catch (e: Exception) { "" }
+        )
+
+fun box(): String = tryZap("OK") { it }