builtin::trim: dest is always TARG

builtin.c

@@ -225,7 +225,6 @@ XS(XS_builtin_trim)
     SV *source = TOPs;
     STRLEN len;
     const U8 *start;
-    SV *dest;
 
     SvGETMAGIC(source);
 
@@ -273,27 +272,25 @@ XS(XS_builtin_trim)
         }
     }
 
-    dest = TARG;
+    SvUPGRADE(TARG, SVt_PV);
+    SvGROW(TARG, len + 1);
 
-    SvUPGRADE(dest, SVt_PV);
-    SvGROW(dest, len + 1);
-
-    Copy(start, SvPVX(dest), len, U8);
-    SvPVX(dest)[len] = '\0';
-    SvPOK_only_UTF8(dest);
-    SvCUR_set(dest, len);
+    Copy(start, SvPVX(TARG), len, U8);
+    SvPVX(TARG)[len] = '\0';
+    SvPOK_only_UTF8(TARG);
+    SvCUR_set(TARG, len);
 
     if (DO_UTF8(source))
-        SvUTF8_on(dest);
+        SvUTF8_on(TARG);
     else
-        SvUTF8_off(dest);
+        SvUTF8_off(TARG);
 
     if (SvTAINTED(source))
-        SvTAINT(dest);
+        SvTAINT(TARG);
 
-    SvSETMAGIC(dest);
+    SvSETMAGIC(TARG);
 
-    SETs(dest);
+    SETs(TARG);
 
     XSRETURN(1);
 }