Fix string multiplication with a value between 0.0 and 1.0

This commit fixes a regression of 6306ac8966.

src/builtin.c

@@ -360,7 +360,8 @@ static jv f_multiply(jq_state *jq, jv input, jv a, jv b) {
       num = a;
     }
     jv res = jv_null();
-    int n = jv_number_value(num);
+    double d = jv_number_value(num);
+    int n = 0.0 < d && d < 1.0 ? 1 : d;
     if (n > 0) {
       size_t alen = jv_string_length_bytes(jv_copy(str));
       res = jv_string_empty(alen * n);

tests/jq.test

@@ -1284,6 +1284,10 @@ indices(", ")
 ["a", "ab", "abc"]
 ["aaa", "ababab", "abcabcabc"]
 
+[.[] * "abc"]
+[-1.0, -0.5, 0.0, 0.5, 1.0, 1.5, 3.7, 10.0]
+[null,null,null,"abc","abc","abc","abcabcabc","abcabcabcabcabcabcabcabcabcabc"]
+
 [.[] / ","]
 ["a, bc, def, ghij, jklmn, a,b, c,d, e,f", "a,b,c,d, e,f,g,h"]
 [["a"," bc"," def"," ghij"," jklmn"," a","b"," c","d"," e","f"],["a","b","c","d"," e","f","g","h"]]