Revert overenthusiastic procfs fixup

Also, be more systematic in calls to string_to_number.
* src/sysdep.c (list_system_processes) [HAVE_PROCFS]: Allow pids
to be floating-point if they exceed fixnum range.  This partially
reverts my patch 2018-03-09T20:06:05Z!eggert@cs.ucla.edu, which
went too far in fixing string-to-number mishandling.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lread.c b/src/lread.c
index 0ea7677300b..381f9cf20c5 100644
--- a/src/lread.c
+++ b/src/lread.c
@@ -2693,7 +2693,7 @@ read_integer (Lisp_Object readcharfun, EMACS_INT radix)
       invalid_syntax (buf);
     }
 
-  return string_to_number (buf, radix, 0);
+  return string_to_number (buf, radix, false);
 }
 
 
@@ -3502,7 +3502,7 @@ read1 (Lisp_Object readcharfun, int *pch, bool first_in_list)
 
         if (!quoted && !uninterned_symbol)
           {
-            Lisp_Object result = string_to_number (read_buffer, 10, 0);
+            Lisp_Object result = string_to_number (read_buffer, 10, false);
             if (! NILP (result))
               return unbind_to (count, result);
           }