[monitoring-plugins] Fixes for compiler warning -Wparentheses

[RincewindsHat]

 Module: monitoring-plugins
 Branch: master
 Commit: 6972242126f1dbfb929dbd1c1582d973d2094d8a
 Author: RincewindsHat <12514511+RincewindsHat at users.noreply.github.com>
   Date: Mon Oct 16 00:44:08 2023 +0200
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=6972242

Fixes for compiler warning -Wparentheses

---

 lib/extra_opts.c      | 4 ++--
 lib/utils_base.c      | 4 ++--
 plugins/check_http.c  | 2 +-
 plugins/check_procs.c | 5 +++--
 4 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/lib/extra_opts.c b/lib/extra_opts.c
index b9843eb..771621d 100644
--- a/lib/extra_opts.c
+++ b/lib/extra_opts.c
@@ -92,14 +92,14 @@ char **np_extra_opts(int *argc, char **argv, const char *plugin_name){
 			/* append the list to extra_args */
 			if(extra_args==NULL){
 				extra_args=ea1;
-				while(ea1=ea1->next) ea_num++;
+				while((ea1 = ea1->next)) ea_num++;
 			}else{
 				ea_tmp=extra_args;
 				while(ea_tmp->next) {
 					ea_tmp=ea_tmp->next;
 				}
 				ea_tmp->next=ea1;
-				while(ea1=ea1->next) ea_num++;
+				while((ea1 = ea1->next)) ea_num++;
 			}
 			ea1=ea_tmp=NULL;
 		}
diff --git a/lib/utils_base.c b/lib/utils_base.c
index 3c7221c..f86efbe 100644
--- a/lib/utils_base.c
+++ b/lib/utils_base.c
@@ -331,7 +331,7 @@ char *np_extract_value(const char *varlist, const char *name, char sep) {
 				/* strip leading spaces */
 				for (; isspace(varlist[0]); varlist++);
 
-				if (tmp = index(varlist, sep)) {
+				if ((tmp = index(varlist, sep))) {
 					/* Value is delimited by a comma */
 					if (tmp-varlist == 0) continue;
 					value = (char *)calloc(1, tmp-varlist+1);
@@ -347,7 +347,7 @@ char *np_extract_value(const char *varlist, const char *name, char sep) {
 				break;
 			}
 		}
-		if (tmp = index(varlist, sep)) {
+		if ((tmp = index(varlist, sep))) {
 			/* More keys, keep going... */
 			varlist = tmp + 1;
 		} else {
diff --git a/plugins/check_http.c b/plugins/check_http.c
index 718c8ee..b9d8145 100644
--- a/plugins/check_http.c
+++ b/plugins/check_http.c
@@ -1094,7 +1094,7 @@ check_http (void)
       microsec_firstbyte = deltime (tv_temp);
       elapsed_time_firstbyte = (double)microsec_firstbyte / 1.0e6;
     }
-    while (pos = memchr(buffer, '\0', i)) {
+    while ((pos = memchr(buffer, '\0', i))) {
       /* replace nul character with a blank */
       *pos = ' ';
     }
diff --git a/plugins/check_procs.c b/plugins/check_procs.c
index c17c699..1637e3e 100644
--- a/plugins/check_procs.c
+++ b/plugins/check_procs.c
@@ -241,8 +241,9 @@ main (int argc, char **argv)
 
 			/* Ignore self */
 			if ((usepid && mypid == procpid) ||
-				(!usepid && ((ret = stat_exe(procpid, &statbuf) != -1) && statbuf.st_dev == mydev && statbuf.st_ino == myino) ||
-				 (ret == -1 && errno == ENOENT))) {
+				( ((!usepid) && ((ret = stat_exe(procpid, &statbuf) != -1) && statbuf.st_dev == mydev && statbuf.st_ino == myino)) ||
+				 (ret == -1 && errno == ENOENT))
+				) {
 				if (verbose >= 3)
 					 printf("not considering - is myself or gone\n");
 				continue;