qrtplib: fixed compiler warning

qrtplib/rtprandomurandom.cpp

@@ -70,9 +70,11 @@ uint8_t RTPRandomURandom::GetRandom8()
 
 	uint8_t value;
 
-	fread(&value, sizeof(uint8_t), 1, device);
-
-	return value;
+	if (fread(&value, sizeof(uint8_t), 1, device) == sizeof(uint8_t)) {
+	    return value;
+	} else {
+	    return 0;
+	}
 }
 
 uint16_t RTPRandomURandom::GetRandom16()
@@ -82,9 +84,11 @@ uint16_t RTPRandomURandom::GetRandom16()
 
 	uint16_t value;
 
-	fread(&value, sizeof(uint16_t), 1, device);
-
-	return value;
+    if (fread(&value, sizeof(uint16_t), 1, device) == sizeof(uint16_t)) {
+        return value;
+    } else {
+        return 0;
+    }
 }
 
 uint32_t RTPRandomURandom::GetRandom32()
@@ -94,7 +98,11 @@ uint32_t RTPRandomURandom::GetRandom32()
 
 	uint32_t value;
 
-	fread(&value, sizeof(uint32_t), 1, device);
+    if (fread(&value, sizeof(uint32_t), 1, device) == sizeof(uint32_t)) {
+        return value;
+    } else {
+        return 0;
+    }
 
 	return value;
 }
@@ -106,15 +114,17 @@ double RTPRandomURandom::GetRandomDouble()
 
 	uint64_t value;
 
-	fread(&value, sizeof(uint64_t), 1, device);
-
-	value &= 0x7fffffffffffffffULL;
-
-	int64_t value2 = (int64_t)value;
-	double x = RTPRANDOM_2POWMIN63*(double)value2;
-
-	return x;
-
+    if (fread(&value, sizeof(uint64_t), 1, device) == sizeof(uint64_t))
+    {
+        value &= 0x7fffffffffffffffULL;
+        int64_t value2 = (int64_t)value;
+        double x = RTPRANDOM_2POWMIN63*(double)value2;
+        return x;
+    }
+    else
+    {
+        return 0;
+    }
 }
 
 } // end namespace