Use SvREFCNT_dec_NN in various cop.h macros

Many of these SVs are never null, and therefore need no null checks.

diff --git a/cop.h b/cop.h
index 74ec151..0a682f1 100644 (file)
--- a/cop.h
+++ b/cop.h
@@ -653,7 +653,7 @@ struct block_format {
            /* abandon @_ if it got reified */                          \
            if (AvREAL(cx->blk_sub.argarray)) {                         \
                const SSize_t fill = AvFILLp(cx->blk_sub.argarray);     \
-               SvREFCNT_dec(cx->blk_sub.argarray);                     \
+               SvREFCNT_dec_NN(cx->blk_sub.argarray);                  \
                cx->blk_sub.argarray = newAV();                         \
                av_extend(cx->blk_sub.argarray, fill);                  \
                AvREIFY_only(cx->blk_sub.argarray);                     \
@@ -677,8 +677,9 @@ struct block_format {
 #define POPFORMAT(cx)                                                  \
        setdefout(cx->blk_format.dfoutgv);                              \
        CvDEPTH(cx->blk_format.cv)--;                                   \
-       if (!CvDEPTH(cx->blk_format.cv)) SvREFCNT_dec(cx->blk_format.cv); \
-       SvREFCNT_dec(cx->blk_format.dfoutgv);
+       if (!CvDEPTH(cx->blk_format.cv))                                \
+           SvREFCNT_dec_NN(cx->blk_format.cv);                         \
+       SvREFCNT_dec_NN(cx->blk_format.dfoutgv);
 
 /* eval context */
 struct block_eval {
@@ -717,7 +718,7 @@ struct block_eval {
        optype = CxOLD_OP_TYPE(cx);                                     \
        PL_eval_root = cx->blk_eval.old_eval_root;                      \
        if (cx->blk_eval.cur_text && SvSCREAM(cx->blk_eval.cur_text))   \
-           SvREFCNT_dec(cx->blk_eval.cur_text);                        \
+           SvREFCNT_dec_NN(cx->blk_eval.cur_text);                     \
        if (cx->blk_eval.old_namesv)                                    \
            sv_2mortal(cx->blk_eval.old_namesv);                        \
     } STMT_END
@@ -783,8 +784,8 @@ struct block_loop {
 
 #define POPLOOP(cx)                                                    \
        if (CxTYPE(cx) == CXt_LOOP_LAZYSV) {                            \
-           SvREFCNT_dec(cx->blk_loop.state_u.lazysv.cur);              \
-           SvREFCNT_dec(cx->blk_loop.state_u.lazysv.end);              \
+           SvREFCNT_dec_NN(cx->blk_loop.state_u.lazysv.cur);           \
+           SvREFCNT_dec_NN(cx->blk_loop.state_u.lazysv.end);           \
        }                                                               \
        if (CxTYPE(cx) == CXt_LOOP_FOR)                                 \
            SvREFCNT_dec(cx->blk_loop.state_u.ary.ary);