fixup simplified the code for query trimming only

trurl.c

@@ -652,13 +652,14 @@ static int getarg(struct option *o,
     *usedarg = gap;
   }
   else if(checkoptarg(o, "--trim", flag, arg)) {
-    trimadd(o, arg);
+    if(casecompare(arg, "query=", 6))
+      errorf(o, ERROR_TRIM, "Unsupported trim component: %s", arg);
+
+    trimadd(o, &arg[6]);
     *usedarg = gap;
   }
   else if(checkoptarg(o, "--qtrim", flag, arg)) {
-    char buffer[256];
-    curl_msnprintf(buffer, sizeof(buffer), "query=%s", arg);
-    trimadd(o, buffer);
+    trimadd(o, arg);
     *usedarg = gap;
   }
   else if(checkoptarg(o, "-g", flag, arg) ||
@@ -1240,21 +1241,15 @@ static bool trim(struct option *o)
   bool query_is_modified = false;
   struct curl_slist *node;
   for(node = o->trim_list; node; node = node->next) {
-    char *ptr;
-    char *instr = node->data;
-    if(strncmp(instr, "query", 5))
-      /* for now we can only trim query components */
-      errorf(o, ERROR_TRIM, "Unsupported trim component: %s", instr);
-    ptr = strchr(instr, '=');
-    if(ptr && (ptr > instr)) {
+    char *ptr = node->data;
+    if(ptr) {
       /* 'ptr' should be a fixed string or a pattern ending with an
          asterisk */
       size_t inslen;
       bool pattern = false;
       int i;
       char *temp = NULL;
 
-      ptr++; /* pass the = */
       inslen = strlen(ptr);
       if(inslen) {
         pattern = ptr[inslen - 1] == '*';