small cosmetic variable renaming

src/backtrace.c

@@ -62,7 +62,7 @@ mrb_output_backtrace(mrb_state *mrb, struct RObject *exc, output_stream_func fun
   mrb_callinfo *ci;
   mrb_int ciidx;
   const char *filename, *method, *sep;
-  int i, line;
+  int i, lineno;
 
   func(mrb, stream, 1, "trace:\n");
   ciidx = mrb_fixnum(mrb_obj_iv_get(mrb, exc, mrb_intern_lit(mrb, "ciidx")));
@@ -72,7 +72,7 @@ mrb_output_backtrace(mrb_state *mrb, struct RObject *exc, output_stream_func fun
   for (i = ciidx; i >= 0; i--) {
     ci = &mrb->c->cibase[i];
     filename = NULL;
-    line = -1;
+    lineno = -1;
 
     if (MRB_PROC_CFUNC_P(ci->proc)) {
       continue;
@@ -91,9 +91,9 @@ mrb_output_backtrace(mrb_state *mrb, struct RObject *exc, output_stream_func fun
         pc = (mrb_code*)mrb_cptr(mrb_obj_iv_get(mrb, exc, mrb_intern_lit(mrb, "lastpc")));
       }
       filename = mrb_debug_get_filename(irep, pc - irep->iseq);
-      line = mrb_debug_get_line(irep, pc - irep->iseq);
+      lineno = mrb_debug_get_line(irep, pc - irep->iseq);
     }
-    if (line == -1) continue;
+    if (lineno == -1) continue;
     if (ci->target_class == ci->proc->target_class)
       sep = ".";
     else
@@ -109,18 +109,18 @@ mrb_output_backtrace(mrb_state *mrb, struct RObject *exc, output_stream_func fun
 
       if (cn) {
         func(mrb, stream, 1, "\t[%d] ", i);
-        func(mrb, stream, 0, "%s:%d:in %s%s%s", filename, line, cn, sep, method);
+        func(mrb, stream, 0, "%s:%d:in %s%s%s", filename, lineno, cn, sep, method);
         func(mrb, stream, 1, "\n");
       }
       else {
         func(mrb, stream, 1, "\t[%d] ", i);
-        func(mrb, stream, 0, "%s:%d:in %s", filename, line, method);
+        func(mrb, stream, 0, "%s:%d:in %s", filename, lineno, method);
         func(mrb, stream, 1, "\n");
       }
     }
     else {
         func(mrb, stream, 1, "\t[%d] ", i);
-        func(mrb, stream, 0, "%s:%d", filename, line);
+        func(mrb, stream, 0, "%s:%d", filename, lineno);
         func(mrb, stream, 1, "\n");
     }
   }