Subzero: Fix trailing whitespace errors.

tests_lit/assembler/arm32/push-pop.ll

 ; Show that we know how to translate push and pop.
 ; TODO(kschimpf) Translate pop instructions.
 
 ; NOTE: We use -O2 to get rid of memory stores.
 
 ; REQUIRES: allow_dump
 
 ; Compile using standalone assembler.
 ; RUN: %p2i --filetype=asm -i %s --target=arm32 --args -O2 -allow-extern \
 ; RUN:   -reg-use r0,r1,r2,r3,r4,r5 | FileCheck %s --check-prefix=ASM
@@ skipping 18 matching lines @@
 define internal void @SinglePushPop() {
 ; ASM-LABEL:SinglePushPop:
 ; DIS-LABEL:{{.+}} <SinglePushPop>:
 ; IASM-LABEL:SinglePushPop:
 
 ; ASM:    push    {lr}
 ; DIS:    {{.+}}  e52de004
 ; IASM-NOT: push
 
   call void @DoSomething();
-  ret void       
+  ret void
 
 ; ASM:    pop     {lr}
 ; DIS:    {{.+}}  e49de004
 ; IASM-NOT: pop
 
 }
 
 ; This test is based on taking advantage of the over-eager -O2
 ; register allocator that puts V1 and V2 into callee-save registers,
 ; since the call instruction kills the scratch registers. This
@@ skipping 11 matching lines @@
 
   call void @DoSomething();
   %v3 = add i32 %v1, %v2
   ret i32 %v3
 
 ; ASM:    pop     {r4, r5, lr}
 ; DIS:    {{.+}}  e8bd4030
 ; IASM-NOT: pop
 
 }