Refactor alloc_lproc to use grow_array helper

Author: jiegec

lib/common.h

@@ -1331,7 +1331,7 @@ struct lsof_context {
     struct lproc *procs;
     /** Length and capacity of `procs` */
     size_t procs_size;
-    size_t procs_cap;
+    int procs_cap;
 
     /** Pointer to current file */
     struct lfile *cur_file;

lib/proc.c

@@ -236,24 +236,19 @@ void alloc_lproc(struct lsof_context *ctx, int pid, /* Process ID */
                  int pss,                           /* process select state */
                  int sf)                            /* process select flags */
 {
-    static int sz = 0;
-
     if (!Lproc) {
-        if (!(Lproc = (struct lproc *)malloc(
-                  (MALLOC_S)(LPROCINCR * sizeof(struct lproc))))) {
+        if (grow_array((void **)&Lproc, &ctx->procs_cap, sizeof(struct lproc),
+                       LPROCINCR)) {
             (void)fprintf(stderr,
                           "%s: no malloc space for %d local proc structures\n",
                           Pn, LPROCINCR);
             Error(ctx);
         }
-        sz = LPROCINCR;
-    } else if ((Nlproc + 1) > sz) {
-        sz += LPROCINCR;
-        if (!(Lproc = (struct lproc *)realloc(
-                  (MALLOC_P *)Lproc, (MALLOC_S)(sz * sizeof(struct lproc))))) {
-            (void)fprintf(stderr,
-                          "%s: no realloc space for %d local proc structures\n",
-                          Pn, sz);
+    } else if ((Nlproc + 1) > ctx->procs_cap) {
+        if (grow_array((void **)&Lproc, &ctx->procs_cap, sizeof(struct lproc),
+                       LPROCINCR)) {
+            (void)fprintf(
+                stderr, "%s: no realloc space for local proc structures\n", Pn);
             Error(ctx);
         }
     }