Fixes bug on conditional branch where the targets are the same.

tests_lit/llvm2ice_tests/cond-br-same-target.ll

+; Test conditional branch where targets are the same.
+; Tests issue: https://code.google.com/p/nativeclient/issues/detail?id=4212
+
+; RUN: %p2i -i %s --insts | FileCheck %s
+
+define void @f(i32 %foo, i32 %bar) {
+entry:
+  %c = icmp ult i32 %foo, %bar
+  br i1 %c, label %block, label %block
+block:
+  ret void
+}
+
+; Note that the branch is converted to an unconditional branch.
+
+; CHECK:      define void @f(i32 %foo, i32 %bar) {
+; CHECK-NEXT: entry:
+; CHECK-NEXT:   %c = icmp ult i32 %foo, %bar
+; CHECK-NEXT:   br label %block
+; CHECK-NEXT: block:
+; CHECK-NEXT:   ret void
+; CHECK-NEXT: }