Be more systematic about parens in C source code

Be more systematic about putting space before paren in calls,
and in avoiding unnecessary parentheses in macros.
This was partly inspired by my wading through gcc -E output
while debugging something else, and seeing too many parens.

This patch does not change the generated .o files on my platform.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/image.c b/src/image.c
index 66838adbb2a..41d72964631 100644
--- a/src/image.c
+++ b/src/image.c
@@ -4875,7 +4875,7 @@ xbm_read_bitmap_data (struct frame *f, char *contents, char *end,
   while (0)
 
 #define expect_ident(IDENT)                                     \
-     if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0)  \
+     if (LA1 == XBM_TK_IDENT && strcmp (buffer, IDENT) == 0)    \
        match ();                                                \
      else                                                       \
        goto failure
@@ -6154,7 +6154,7 @@ xpm_load_image (struct frame *f,
 
 #define expect_ident(IDENT)                                     \
      if (LA1 == XPM_TK_IDENT \
-         && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \
+         && strlen (IDENT) == len && memcmp (IDENT, beg, len) == 0)     \
        match ();                                                \
      else                                                       \
        goto failure